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Merge remote-tracking branch 'asoc/topic/tlv320aic26' into asoc-next
[deliverable/linux.git] / drivers / scsi / megaraid / megaraid_sas_base.c
CommitLineData
c4a3e0a5 1/*
3f1530c1 2 * Linux MegaRAID driver for SAS based RAID controllers
c4a3e0a5 3 *
ae59057b 4 * Copyright (c) 2003-2012 LSI Corporation.
c4a3e0a5 5 *
3f1530c1 6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
c4a3e0a5 10 *
3f1530c1 11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
c4a3e0a5 15 *
3f1530c1 16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
c4a3e0a5 19 *
3f1530c1 20 * FILE: megaraid_sas_base.c
2b4857c3 21 * Version : 06.700.06.00-rc1
c4a3e0a5 22 *
3f1530c1 23 * Authors: LSI Corporation
24 * Sreenivas Bagalkote
25 * Sumant Patro
26 * Bo Yang
00fa2b19 27 * Adam Radford <linuxraid@lsi.com>
c4a3e0a5 28 *
3f1530c1 29 * Send feedback to: <megaraidlinux@lsi.com>
30 *
31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
32 * ATTN: Linuxraid
c4a3e0a5
BS		 33 */
34
35#include <linux/kernel.h>
36#include <linux/types.h>
37#include <linux/pci.h>
38#include <linux/list.h>
c4a3e0a5
BS		 39#include <linux/moduleparam.h>
40#include <linux/module.h>
41#include <linux/spinlock.h>
42#include <linux/interrupt.h>
43#include <linux/delay.h>
44#include <linux/uio.h>
5a0e3ad6 45#include <linux/slab.h>
c4a3e0a5 46#include <asm/uaccess.h>
43399236 47#include <linux/fs.h>
c4a3e0a5 48#include <linux/compat.h>
cf62a0a5 49#include <linux/blkdev.h>
0b950672 50#include <linux/mutex.h>
c3518837 51#include <linux/poll.h>
c4a3e0a5
BS		 52
53#include <scsi/scsi.h>
54#include <scsi/scsi_cmnd.h>
55#include <scsi/scsi_device.h>
56#include <scsi/scsi_host.h>
4bcde509 57#include <scsi/scsi_tcq.h>
9c915a8c 58#include "megaraid_sas_fusion.h"
c4a3e0a5
BS		 59#include "megaraid_sas.h"
60
1fd10685
YB		 61/*
62 * Number of sectors per IO command
63 * Will be set in megasas_init_mfi if user does not provide
64 */
65static unsigned int max_sectors;
66module_param_named(max_sectors, max_sectors, int, 0);
67MODULE_PARM_DESC(max_sectors,
68 "Maximum number of sectors per IO command");
69
80d9da98 70static int msix_disable;
71module_param(msix_disable, int, S_IRUGO);
72MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
73
079eaddf 74static unsigned int msix_vectors;
75module_param(msix_vectors, int, S_IRUGO);
76MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
77
c5daa6a9 78static int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
79module_param(throttlequeuedepth, int, S_IRUGO);
80MODULE_PARM_DESC(throttlequeuedepth,
81 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
82
c007b8b2 83int resetwaittime = MEGASAS_RESET_WAIT_TIME;
84module_param(resetwaittime, int, S_IRUGO);
85MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
86 "before resetting adapter. Default: 180");
87
c4a3e0a5
BS		 88MODULE_LICENSE("GPL");
89MODULE_VERSION(MEGASAS_VERSION);
3d6d174a 90MODULE_AUTHOR("megaraidlinux@lsi.com");
f28cd7cf 91MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
c4a3e0a5 92
058a8fac 93int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
39a98554 94static int megasas_get_pd_list(struct megasas_instance *instance);
21c9e160 95static int megasas_ld_list_query(struct megasas_instance *instance,
96 u8 query_type);
39a98554 97static int megasas_issue_init_mfi(struct megasas_instance *instance);
98static int megasas_register_aen(struct megasas_instance *instance,
99 u32 seq_num, u32 class_locale_word);
c4a3e0a5
BS		 100/*
101 * PCI ID table for all supported controllers
102 */
103static struct pci_device_id megasas_pci_table[] = {
104
f3d7271c
HK		 105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
106 /* xscale IOP */
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
108 /* ppc IOP */
af7a5647 109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
110 /* ppc IOP */
6610a6b3
YB		 111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
112 /* gen2*/
113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
114 /* gen2*/
87911122
YB		 115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
116 /* skinny*/
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
118 /* skinny*/
f3d7271c
HK		 119 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
120 /* xscale IOP, vega */
121 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
122 /* xscale IOP */
9c915a8c 123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
124 /* Fusion */
36807e67 125 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
126 /* Invader */
21d3c710
SS		 127 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
128 /* Fury */
f3d7271c 129 {}
c4a3e0a5
BS		 130};
131
132MODULE_DEVICE_TABLE(pci, megasas_pci_table);
133
134static int megasas_mgmt_majorno;
135static struct megasas_mgmt_info megasas_mgmt_info;
136static struct fasync_struct *megasas_async_queue;
0b950672 137static DEFINE_MUTEX(megasas_async_queue_mutex);
c4a3e0a5 138
c3518837
YB		 139static int megasas_poll_wait_aen;
140static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
72c4fd36 141static u32 support_poll_for_event;
9c915a8c 142u32 megasas_dbg_lvl;
837f5fe8 143static u32 support_device_change;
658dcedb 144
c3518837
YB		 145/* define lock for aen poll */
146spinlock_t poll_aen_lock;
147
9c915a8c 148void
7343eb65 149megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
150 u8 alt_status);
ebf054b0 151static u32
152megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
153static int
154megasas_adp_reset_gen2(struct megasas_instance *instance,
155 struct megasas_register_set __iomem *reg_set);
cd50ba8e 156static irqreturn_t megasas_isr(int irq, void *devp);
157static u32
158megasas_init_adapter_mfi(struct megasas_instance *instance);
159u32
160megasas_build_and_issue_cmd(struct megasas_instance *instance,
161 struct scsi_cmnd *scmd);
162static void megasas_complete_cmd_dpc(unsigned long instance_addr);
9c915a8c 163void
164megasas_release_fusion(struct megasas_instance *instance);
165int
166megasas_ioc_init_fusion(struct megasas_instance *instance);
167void
168megasas_free_cmds_fusion(struct megasas_instance *instance);
169u8
170megasas_get_map_info(struct megasas_instance *instance);
171int
172megasas_sync_map_info(struct megasas_instance *instance);
173int
174wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
175void megasas_reset_reply_desc(struct megasas_instance *instance);
9c915a8c 176int megasas_reset_fusion(struct Scsi_Host *shost);
177void megasas_fusion_ocr_wq(struct work_struct *work);
cd50ba8e 178
179void
180megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
181{
182 instance->instancet->fire_cmd(instance,
183 cmd->frame_phys_addr, 0, instance->reg_set);
184}
7343eb65 185
c4a3e0a5
BS		 186/**
187 * megasas_get_cmd - Get a command from the free pool
188 * @instance: Adapter soft state
189 *
190 * Returns a free command from the pool
191 */
9c915a8c 192struct megasas_cmd *megasas_get_cmd(struct megasas_instance
c4a3e0a5
BS		 193 *instance)
194{
195 unsigned long flags;
196 struct megasas_cmd *cmd = NULL;
197
198 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
199
200 if (!list_empty(&instance->cmd_pool)) {
201 cmd = list_entry((&instance->cmd_pool)->next,
202 struct megasas_cmd, list);
203 list_del_init(&cmd->list);
204 } else {
205 printk(KERN_ERR "megasas: Command pool empty!\n");
206 }
207
208 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
209 return cmd;
210}
211
212/**
213 * megasas_return_cmd - Return a cmd to free command pool
214 * @instance: Adapter soft state
215 * @cmd: Command packet to be returned to free command pool
216 */
9c915a8c 217inline void
c4a3e0a5
BS		 218megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
219{
220 unsigned long flags;
221
222 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
223
224 cmd->scmd = NULL;
9c915a8c 225 cmd->frame_count = 0;
e5f93a36 226 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
227 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
21d3c710 228 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
e5f93a36 229 (reset_devices))
230 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
c4a3e0a5
BS		 231 list_add_tail(&cmd->list, &instance->cmd_pool);
232
233 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
234}
235
1341c939
SP		 236
237/**
0d49016b 238* The following functions are defined for xscale
1341c939
SP		 239* (deviceid : 1064R, PERC5) controllers
240*/
241
c4a3e0a5 242/**
1341c939 243 * megasas_enable_intr_xscale - Enables interrupts
c4a3e0a5
BS		 244 * @regs: MFI register set
245 */
246static inline void
d46a3ad6 247megasas_enable_intr_xscale(struct megasas_instance *instance)
c4a3e0a5 248{
d46a3ad6
SS		 249 struct megasas_register_set __iomem *regs;
250 regs = instance->reg_set;
39a98554 251 writel(0, &(regs)->outbound_intr_mask);
c4a3e0a5
BS		 252
253 /* Dummy readl to force pci flush */
254 readl(&regs->outbound_intr_mask);
255}
256
b274cab7
SP		 257/**
258 * megasas_disable_intr_xscale -Disables interrupt
259 * @regs: MFI register set
260 */
261static inline void
d46a3ad6 262megasas_disable_intr_xscale(struct megasas_instance *instance)
b274cab7 263{
d46a3ad6 264 struct megasas_register_set __iomem *regs;
b274cab7 265 u32 mask = 0x1f;
d46a3ad6 266 regs = instance->reg_set;
b274cab7
SP		 267 writel(mask, &regs->outbound_intr_mask);
268 /* Dummy readl to force pci flush */
269 readl(&regs->outbound_intr_mask);
270}
271
1341c939
SP		 272/**
273 * megasas_read_fw_status_reg_xscale - returns the current FW status value
274 * @regs: MFI register set
275 */
276static u32
277megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
278{
279 return readl(&(regs)->outbound_msg_0);
280}
281/**
282 * megasas_clear_interrupt_xscale - Check & clear interrupt
283 * @regs: MFI register set
284 */
0d49016b 285static int
1341c939
SP		 286megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
287{
288 u32 status;
39a98554 289 u32 mfiStatus = 0;
1341c939
SP		 290 /*
291 * Check if it is our interrupt
292 */
293 status = readl(&regs->outbound_intr_status);
294
39a98554 295 if (status & MFI_OB_INTR_STATUS_MASK)
296 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
297 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
298 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
1341c939
SP		 299
300 /*
301 * Clear the interrupt by writing back the same value
302 */
39a98554 303 if (mfiStatus)
304 writel(status, &regs->outbound_intr_status);
1341c939 305
06f579de
YB		 306 /* Dummy readl to force pci flush */
307 readl(&regs->outbound_intr_status);
308
39a98554 309 return mfiStatus;
1341c939
SP		 310}
311
312/**
313 * megasas_fire_cmd_xscale - Sends command to the FW
314 * @frame_phys_addr : Physical address of cmd
315 * @frame_count : Number of frames for the command
316 * @regs : MFI register set
317 */
0d49016b 318static inline void
0c79e681
YB		 319megasas_fire_cmd_xscale(struct megasas_instance *instance,
320 dma_addr_t frame_phys_addr,
321 u32 frame_count,
322 struct megasas_register_set __iomem *regs)
1341c939 323{
39a98554 324 unsigned long flags;
325 spin_lock_irqsave(&instance->hba_lock, flags);
1341c939
SP		 326 writel((frame_phys_addr >> 3)|(frame_count),
327 &(regs)->inbound_queue_port);
39a98554 328 spin_unlock_irqrestore(&instance->hba_lock, flags);
329}
330
331/**
332 * megasas_adp_reset_xscale - For controller reset
333 * @regs: MFI register set
334 */
335static int
336megasas_adp_reset_xscale(struct megasas_instance *instance,
337 struct megasas_register_set __iomem *regs)
338{
339 u32 i;
340 u32 pcidata;
341 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
342
343 for (i = 0; i < 3; i++)
344 msleep(1000); /* sleep for 3 secs */
345 pcidata = 0;
346 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
347 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
348 if (pcidata & 0x2) {
349 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
350 pcidata &= ~0x2;
351 pci_write_config_dword(instance->pdev,
352 MFI_1068_PCSR_OFFSET, pcidata);
353
354 for (i = 0; i < 2; i++)
355 msleep(1000); /* need to wait 2 secs again */
356
357 pcidata = 0;
358 pci_read_config_dword(instance->pdev,
359 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
360 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
361 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
362 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
363 pcidata = 0;
364 pci_write_config_dword(instance->pdev,
365 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
366 }
367 }
368 return 0;
369}
370
371/**
372 * megasas_check_reset_xscale - For controller reset check
373 * @regs: MFI register set
374 */
375static int
376megasas_check_reset_xscale(struct megasas_instance *instance,
377 struct megasas_register_set __iomem *regs)
378{
39a98554 379
380 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
94cd65dd
SS		 381 (le32_to_cpu(*instance->consumer) ==
382 MEGASAS_ADPRESET_INPROG_SIGN))
39a98554 383 return 1;
39a98554 384 return 0;
1341c939
SP		 385}
386
387static struct megasas_instance_template megasas_instance_template_xscale = {
388
389 .fire_cmd = megasas_fire_cmd_xscale,
390 .enable_intr = megasas_enable_intr_xscale,
b274cab7 391 .disable_intr = megasas_disable_intr_xscale,
1341c939
SP		 392 .clear_intr = megasas_clear_intr_xscale,
393 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
39a98554 394 .adp_reset = megasas_adp_reset_xscale,
395 .check_reset = megasas_check_reset_xscale,
cd50ba8e 396 .service_isr = megasas_isr,
397 .tasklet = megasas_complete_cmd_dpc,
398 .init_adapter = megasas_init_adapter_mfi,
399 .build_and_issue_cmd = megasas_build_and_issue_cmd,
400 .issue_dcmd = megasas_issue_dcmd,
1341c939
SP		 401};
402
403/**
0d49016b 404* This is the end of set of functions & definitions specific
1341c939
SP		 405* to xscale (deviceid : 1064R, PERC5) controllers
406*/
407
f9876f0b 408/**
0d49016b 409* The following functions are defined for ppc (deviceid : 0x60)
f9876f0b
SP		 410* controllers
411*/
412
413/**
414 * megasas_enable_intr_ppc - Enables interrupts
415 * @regs: MFI register set
416 */
417static inline void
d46a3ad6 418megasas_enable_intr_ppc(struct megasas_instance *instance)
f9876f0b 419{
d46a3ad6
SS		 420 struct megasas_register_set __iomem *regs;
421 regs = instance->reg_set;
f9876f0b 422 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
0d49016b 423
39a98554 424 writel(~0x80000000, &(regs)->outbound_intr_mask);
f9876f0b
SP		 425
426 /* Dummy readl to force pci flush */
427 readl(&regs->outbound_intr_mask);
428}
429
b274cab7
SP		 430/**
431 * megasas_disable_intr_ppc - Disable interrupt
432 * @regs: MFI register set
433 */
434static inline void
d46a3ad6 435megasas_disable_intr_ppc(struct megasas_instance *instance)
b274cab7 436{
d46a3ad6 437 struct megasas_register_set __iomem *regs;
b274cab7 438 u32 mask = 0xFFFFFFFF;
d46a3ad6 439 regs = instance->reg_set;
b274cab7
SP		 440 writel(mask, &regs->outbound_intr_mask);
441 /* Dummy readl to force pci flush */
442 readl(&regs->outbound_intr_mask);
443}
444
f9876f0b
SP		 445/**
446 * megasas_read_fw_status_reg_ppc - returns the current FW status value
447 * @regs: MFI register set
448 */
449static u32
450megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
451{
452 return readl(&(regs)->outbound_scratch_pad);
453}
454
455/**
456 * megasas_clear_interrupt_ppc - Check & clear interrupt
457 * @regs: MFI register set
458 */
0d49016b 459static int
f9876f0b
SP		 460megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
461{
3cc6851f 462 u32 status, mfiStatus = 0;
463
f9876f0b
SP		 464 /*
465 * Check if it is our interrupt
466 */
467 status = readl(&regs->outbound_intr_status);
468
3cc6851f 469 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
470 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
471
472 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
473 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
f9876f0b
SP		 474
475 /*
476 * Clear the interrupt by writing back the same value
477 */
478 writel(status, &regs->outbound_doorbell_clear);
479
06f579de
YB		 480 /* Dummy readl to force pci flush */
481 readl(&regs->outbound_doorbell_clear);
482
3cc6851f 483 return mfiStatus;
f9876f0b 484}
3cc6851f 485
f9876f0b
SP		 486/**
487 * megasas_fire_cmd_ppc - Sends command to the FW
488 * @frame_phys_addr : Physical address of cmd
489 * @frame_count : Number of frames for the command
490 * @regs : MFI register set
491 */
0d49016b 492static inline void
0c79e681
YB		 493megasas_fire_cmd_ppc(struct megasas_instance *instance,
494 dma_addr_t frame_phys_addr,
495 u32 frame_count,
496 struct megasas_register_set __iomem *regs)
f9876f0b 497{
39a98554 498 unsigned long flags;
499 spin_lock_irqsave(&instance->hba_lock, flags);
0d49016b 500 writel((frame_phys_addr | (frame_count<<1))|1,
f9876f0b 501 &(regs)->inbound_queue_port);
39a98554 502 spin_unlock_irqrestore(&instance->hba_lock, flags);
f9876f0b
SP		 503}
504
39a98554 505/**
506 * megasas_check_reset_ppc - For controller reset check
507 * @regs: MFI register set
508 */
509static int
510megasas_check_reset_ppc(struct megasas_instance *instance,
511 struct megasas_register_set __iomem *regs)
512{
3cc6851f 513 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
514 return 1;
515
39a98554 516 return 0;
517}
3cc6851f 518
f9876f0b 519static struct megasas_instance_template megasas_instance_template_ppc = {
0d49016b 520
f9876f0b
SP		 521 .fire_cmd = megasas_fire_cmd_ppc,
522 .enable_intr = megasas_enable_intr_ppc,
b274cab7 523 .disable_intr = megasas_disable_intr_ppc,
f9876f0b
SP		 524 .clear_intr = megasas_clear_intr_ppc,
525 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
3cc6851f 526 .adp_reset = megasas_adp_reset_xscale,
39a98554 527 .check_reset = megasas_check_reset_ppc,
cd50ba8e 528 .service_isr = megasas_isr,
529 .tasklet = megasas_complete_cmd_dpc,
530 .init_adapter = megasas_init_adapter_mfi,
531 .build_and_issue_cmd = megasas_build_and_issue_cmd,
532 .issue_dcmd = megasas_issue_dcmd,
f9876f0b
SP		 533};
534
87911122
YB		 535/**
536 * megasas_enable_intr_skinny - Enables interrupts
537 * @regs: MFI register set
538 */
539static inline void
d46a3ad6 540megasas_enable_intr_skinny(struct megasas_instance *instance)
87911122 541{
d46a3ad6
SS		 542 struct megasas_register_set __iomem *regs;
543 regs = instance->reg_set;
87911122
YB		 544 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
545
546 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
547
548 /* Dummy readl to force pci flush */
549 readl(&regs->outbound_intr_mask);
550}
551
552/**
553 * megasas_disable_intr_skinny - Disables interrupt
554 * @regs: MFI register set
555 */
556static inline void
d46a3ad6 557megasas_disable_intr_skinny(struct megasas_instance *instance)
87911122 558{
d46a3ad6 559 struct megasas_register_set __iomem *regs;
87911122 560 u32 mask = 0xFFFFFFFF;
d46a3ad6 561 regs = instance->reg_set;
87911122
YB		 562 writel(mask, &regs->outbound_intr_mask);
563 /* Dummy readl to force pci flush */
564 readl(&regs->outbound_intr_mask);
565}
566
567/**
568 * megasas_read_fw_status_reg_skinny - returns the current FW status value
569 * @regs: MFI register set
570 */
571static u32
572megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
573{
574 return readl(&(regs)->outbound_scratch_pad);
575}
576
577/**
578 * megasas_clear_interrupt_skinny - Check & clear interrupt
579 * @regs: MFI register set
580 */
581static int
582megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
583{
584 u32 status;
ebf054b0 585 u32 mfiStatus = 0;
586
87911122
YB		 587 /*
588 * Check if it is our interrupt
589 */
590 status = readl(&regs->outbound_intr_status);
591
592 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
39a98554 593 return 0;
87911122
YB		 594 }
595
ebf054b0 596 /*
597 * Check if it is our interrupt
598 */
a3fda7dd 599 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
ebf054b0 600 MFI_STATE_FAULT) {
601 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
602 } else
603 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
604
87911122
YB		 605 /*
606 * Clear the interrupt by writing back the same value
607 */
608 writel(status, &regs->outbound_intr_status);
609
610 /*
611 * dummy read to flush PCI
612 */
613 readl(&regs->outbound_intr_status);
614
ebf054b0 615 return mfiStatus;
87911122
YB		 616}
617
618/**
619 * megasas_fire_cmd_skinny - Sends command to the FW
620 * @frame_phys_addr : Physical address of cmd
621 * @frame_count : Number of frames for the command
622 * @regs : MFI register set
623 */
624static inline void
0c79e681
YB		 625megasas_fire_cmd_skinny(struct megasas_instance *instance,
626 dma_addr_t frame_phys_addr,
627 u32 frame_count,
87911122
YB		 628 struct megasas_register_set __iomem *regs)
629{
0c79e681 630 unsigned long flags;
39a98554 631 spin_lock_irqsave(&instance->hba_lock, flags);
94cd65dd
SS		 632 writel(upper_32_bits(frame_phys_addr),
633 &(regs)->inbound_high_queue_port);
634 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
635 &(regs)->inbound_low_queue_port);
39a98554 636 spin_unlock_irqrestore(&instance->hba_lock, flags);
637}
638
39a98554 639/**
640 * megasas_check_reset_skinny - For controller reset check
641 * @regs: MFI register set
642 */
643static int
644megasas_check_reset_skinny(struct megasas_instance *instance,
645 struct megasas_register_set __iomem *regs)
646{
3cc6851f 647 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
648 return 1;
649
39a98554 650 return 0;
87911122
YB		 651}
652
653static struct megasas_instance_template megasas_instance_template_skinny = {
654
655 .fire_cmd = megasas_fire_cmd_skinny,
656 .enable_intr = megasas_enable_intr_skinny,
657 .disable_intr = megasas_disable_intr_skinny,
658 .clear_intr = megasas_clear_intr_skinny,
659 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
ebf054b0 660 .adp_reset = megasas_adp_reset_gen2,
39a98554 661 .check_reset = megasas_check_reset_skinny,
cd50ba8e 662 .service_isr = megasas_isr,
663 .tasklet = megasas_complete_cmd_dpc,
664 .init_adapter = megasas_init_adapter_mfi,
665 .build_and_issue_cmd = megasas_build_and_issue_cmd,
666 .issue_dcmd = megasas_issue_dcmd,
87911122
YB		 667};
668
669
6610a6b3
YB		 670/**
671* The following functions are defined for gen2 (deviceid : 0x78 0x79)
672* controllers
673*/
674
675/**
676 * megasas_enable_intr_gen2 - Enables interrupts
677 * @regs: MFI register set
678 */
679static inline void
d46a3ad6 680megasas_enable_intr_gen2(struct megasas_instance *instance)
6610a6b3 681{
d46a3ad6
SS		 682 struct megasas_register_set __iomem *regs;
683 regs = instance->reg_set;
6610a6b3
YB		 684 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
685
686 /* write ~0x00000005 (4 & 1) to the intr mask*/
687 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
688
689 /* Dummy readl to force pci flush */
690 readl(&regs->outbound_intr_mask);
691}
692
693/**
694 * megasas_disable_intr_gen2 - Disables interrupt
695 * @regs: MFI register set
696 */
697static inline void
d46a3ad6 698megasas_disable_intr_gen2(struct megasas_instance *instance)
6610a6b3 699{
d46a3ad6 700 struct megasas_register_set __iomem *regs;
6610a6b3 701 u32 mask = 0xFFFFFFFF;
d46a3ad6 702 regs = instance->reg_set;
6610a6b3
YB		 703 writel(mask, &regs->outbound_intr_mask);
704 /* Dummy readl to force pci flush */
705 readl(&regs->outbound_intr_mask);
706}
707
708/**
709 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
710 * @regs: MFI register set
711 */
712static u32
713megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
714{
715 return readl(&(regs)->outbound_scratch_pad);
716}
717
718/**
719 * megasas_clear_interrupt_gen2 - Check & clear interrupt
720 * @regs: MFI register set
721 */
722static int
723megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
724{
725 u32 status;
39a98554 726 u32 mfiStatus = 0;
6610a6b3
YB		 727 /*
728 * Check if it is our interrupt
729 */
730 status = readl(&regs->outbound_intr_status);
731
b5bccadd 732 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
39a98554 733 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
734 }
735 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
736 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
737 }
6610a6b3
YB		 738
739 /*
740 * Clear the interrupt by writing back the same value
741 */
39a98554 742 if (mfiStatus)
743 writel(status, &regs->outbound_doorbell_clear);
6610a6b3
YB		 744
745 /* Dummy readl to force pci flush */
746 readl(&regs->outbound_intr_status);
747
39a98554 748 return mfiStatus;
6610a6b3
YB		 749}
750/**
751 * megasas_fire_cmd_gen2 - Sends command to the FW
752 * @frame_phys_addr : Physical address of cmd
753 * @frame_count : Number of frames for the command
754 * @regs : MFI register set
755 */
756static inline void
0c79e681
YB		 757megasas_fire_cmd_gen2(struct megasas_instance *instance,
758 dma_addr_t frame_phys_addr,
759 u32 frame_count,
6610a6b3
YB		 760 struct megasas_register_set __iomem *regs)
761{
39a98554 762 unsigned long flags;
763 spin_lock_irqsave(&instance->hba_lock, flags);
6610a6b3
YB		 764 writel((frame_phys_addr | (frame_count<<1))|1,
765 &(regs)->inbound_queue_port);
39a98554 766 spin_unlock_irqrestore(&instance->hba_lock, flags);
767}
768
769/**
770 * megasas_adp_reset_gen2 - For controller reset
771 * @regs: MFI register set
772 */
773static int
774megasas_adp_reset_gen2(struct megasas_instance *instance,
775 struct megasas_register_set __iomem *reg_set)
776{
777 u32 retry = 0 ;
778 u32 HostDiag;
ebf054b0 779 u32 *seq_offset = &reg_set->seq_offset;
780 u32 *hostdiag_offset = &reg_set->host_diag;
781
782 if (instance->instancet == &megasas_instance_template_skinny) {
783 seq_offset = &reg_set->fusion_seq_offset;
784 hostdiag_offset = &reg_set->fusion_host_diag;
785 }
786
787 writel(0, seq_offset);
788 writel(4, seq_offset);
789 writel(0xb, seq_offset);
790 writel(2, seq_offset);
791 writel(7, seq_offset);
792 writel(0xd, seq_offset);
39a98554 793
39a98554 794 msleep(1000);
795
ebf054b0 796 HostDiag = (u32)readl(hostdiag_offset);
39a98554 797
798 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
799 msleep(100);
ebf054b0 800 HostDiag = (u32)readl(hostdiag_offset);
39a98554 801 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
802 retry, HostDiag);
803
804 if (retry++ >= 100)
805 return 1;
806
807 }
808
809 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
810
ebf054b0 811 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
39a98554 812
813 ssleep(10);
814
ebf054b0 815 HostDiag = (u32)readl(hostdiag_offset);
39a98554 816 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
817 msleep(100);
ebf054b0 818 HostDiag = (u32)readl(hostdiag_offset);
39a98554 819 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
820 retry, HostDiag);
821
822 if (retry++ >= 1000)
823 return 1;
824
825 }
826 return 0;
827}
828
829/**
830 * megasas_check_reset_gen2 - For controller reset check
831 * @regs: MFI register set
832 */
833static int
834megasas_check_reset_gen2(struct megasas_instance *instance,
835 struct megasas_register_set __iomem *regs)
836{
707e09bd
YB		 837 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
838 return 1;
839 }
840
39a98554 841 return 0;
6610a6b3
YB		 842}
843
844static struct megasas_instance_template megasas_instance_template_gen2 = {
845
846 .fire_cmd = megasas_fire_cmd_gen2,
847 .enable_intr = megasas_enable_intr_gen2,
848 .disable_intr = megasas_disable_intr_gen2,
849 .clear_intr = megasas_clear_intr_gen2,
850 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
39a98554 851 .adp_reset = megasas_adp_reset_gen2,
852 .check_reset = megasas_check_reset_gen2,
cd50ba8e 853 .service_isr = megasas_isr,
854 .tasklet = megasas_complete_cmd_dpc,
855 .init_adapter = megasas_init_adapter_mfi,
856 .build_and_issue_cmd = megasas_build_and_issue_cmd,
857 .issue_dcmd = megasas_issue_dcmd,
6610a6b3
YB		 858};
859
f9876f0b
SP		 860/**
861* This is the end of set of functions & definitions
39a98554 862* specific to gen2 (deviceid : 0x78, 0x79) controllers
f9876f0b
SP		 863*/
864
9c915a8c 865/*
866 * Template added for TB (Fusion)
867 */
868extern struct megasas_instance_template megasas_instance_template_fusion;
869
c4a3e0a5
BS		 870/**
871 * megasas_issue_polled - Issues a polling command
872 * @instance: Adapter soft state
0d49016b 873 * @cmd: Command packet to be issued
c4a3e0a5
BS		 874 *
875 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
876 */
9c915a8c 877int
c4a3e0a5
BS		 878megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
879{
c4a3e0a5
BS		 880
881 struct megasas_header *frame_hdr = &cmd->frame->hdr;
882
94cd65dd
SS		 883 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
884 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
c4a3e0a5
BS		 885
886 /*
887 * Issue the frame using inbound queue port
888 */
9c915a8c 889 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 890
891 /*
892 * Wait for cmd_status to change
893 */
9c915a8c 894 return wait_and_poll(instance, cmd);
c4a3e0a5
BS		 895}
896
897/**
898 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
899 * @instance: Adapter soft state
900 * @cmd: Command to be issued
901 *
902 * This function waits on an event for the command to be returned from ISR.
2a3681e5 903 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 904 * Used to issue ioctl commands.
905 */
906static int
907megasas_issue_blocked_cmd(struct megasas_instance *instance,
908 struct megasas_cmd *cmd)
909{
910 cmd->cmd_status = ENODATA;
911
9c915a8c 912 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5 913
39a98554 914 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
c4a3e0a5
BS		 915
916 return 0;
917}
918
919/**
920 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
921 * @instance: Adapter soft state
922 * @cmd_to_abort: Previously issued cmd to be aborted
923 *
8e572bab 924 * MFI firmware can abort previously issued AEN command (automatic event
c4a3e0a5 925 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
2a3681e5
SP		 926 * cmd and waits for return status.
927 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
c4a3e0a5
BS		 928 */
929static int
930megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
931 struct megasas_cmd *cmd_to_abort)
932{
933 struct megasas_cmd *cmd;
934 struct megasas_abort_frame *abort_fr;
935
936 cmd = megasas_get_cmd(instance);
937
938 if (!cmd)
939 return -1;
940
941 abort_fr = &cmd->frame->abort;
942
943 /*
944 * Prepare and issue the abort frame
945 */
946 abort_fr->cmd = MFI_CMD_ABORT;
947 abort_fr->cmd_status = 0xFF;
94cd65dd
SS		 948 abort_fr->flags = cpu_to_le16(0);
949 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
950 abort_fr->abort_mfi_phys_addr_lo =
951 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
952 abort_fr->abort_mfi_phys_addr_hi =
953 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
c4a3e0a5
BS		 954
955 cmd->sync_cmd = 1;
956 cmd->cmd_status = 0xFF;
957
9c915a8c 958 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 959
960 /*
961 * Wait for this cmd to complete
962 */
39a98554 963 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
964 cmd->sync_cmd = 0;
c4a3e0a5
BS		 965
966 megasas_return_cmd(instance, cmd);
967 return 0;
968}
969
970/**
971 * megasas_make_sgl32 - Prepares 32-bit SGL
972 * @instance: Adapter soft state
973 * @scp: SCSI command from the mid-layer
974 * @mfi_sgl: SGL to be filled in
975 *
976 * If successful, this function returns the number of SG elements. Otherwise,
977 * it returnes -1.
978 */
858119e1 979static int
c4a3e0a5
BS		 980megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
981 union megasas_sgl *mfi_sgl)
982{
983 int i;
984 int sge_count;
985 struct scatterlist *os_sgl;
986
155d98f0
FT		 987 sge_count = scsi_dma_map(scp);
988 BUG_ON(sge_count < 0);
c4a3e0a5 989
155d98f0
FT		 990 if (sge_count) {
991 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 992 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
993 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
155d98f0 994 }
c4a3e0a5 995 }
c4a3e0a5
BS		 996 return sge_count;
997}
998
999/**
1000 * megasas_make_sgl64 - Prepares 64-bit SGL
1001 * @instance: Adapter soft state
1002 * @scp: SCSI command from the mid-layer
1003 * @mfi_sgl: SGL to be filled in
1004 *
1005 * If successful, this function returns the number of SG elements. Otherwise,
1006 * it returnes -1.
1007 */
858119e1 1008static int
c4a3e0a5
BS		 1009megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1010 union megasas_sgl *mfi_sgl)
1011{
1012 int i;
1013 int sge_count;
1014 struct scatterlist *os_sgl;
1015
155d98f0
FT		 1016 sge_count = scsi_dma_map(scp);
1017 BUG_ON(sge_count < 0);
c4a3e0a5 1018
155d98f0
FT		 1019 if (sge_count) {
1020 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1021 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1022 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
155d98f0 1023 }
c4a3e0a5 1024 }
c4a3e0a5
BS		 1025 return sge_count;
1026}
1027
f4c9a131
YB		 1028/**
1029 * megasas_make_sgl_skinny - Prepares IEEE SGL
1030 * @instance: Adapter soft state
1031 * @scp: SCSI command from the mid-layer
1032 * @mfi_sgl: SGL to be filled in
1033 *
1034 * If successful, this function returns the number of SG elements. Otherwise,
1035 * it returnes -1.
1036 */
1037static int
1038megasas_make_sgl_skinny(struct megasas_instance *instance,
1039 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1040{
1041 int i;
1042 int sge_count;
1043 struct scatterlist *os_sgl;
1044
1045 sge_count = scsi_dma_map(scp);
1046
1047 if (sge_count) {
1048 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
94cd65dd
SS		 1049 mfi_sgl->sge_skinny[i].length =
1050 cpu_to_le32(sg_dma_len(os_sgl));
f4c9a131 1051 mfi_sgl->sge_skinny[i].phys_addr =
94cd65dd
SS		 1052 cpu_to_le64(sg_dma_address(os_sgl));
1053 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
f4c9a131
YB		 1054 }
1055 }
1056 return sge_count;
1057}
1058
b1df99d9
SP		 1059 /**
1060 * megasas_get_frame_count - Computes the number of frames
d532dbe2 1061 * @frame_type : type of frame- io or pthru frame
b1df99d9
SP		 1062 * @sge_count : number of sg elements
1063 *
1064 * Returns the number of frames required for numnber of sge's (sge_count)
1065 */
1066
f4c9a131
YB		 1067static u32 megasas_get_frame_count(struct megasas_instance *instance,
1068 u8 sge_count, u8 frame_type)
b1df99d9
SP		 1069{
1070 int num_cnt;
1071 int sge_bytes;
1072 u32 sge_sz;
1073 u32 frame_count=0;
1074
1075 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1076 sizeof(struct megasas_sge32);
1077
f4c9a131
YB		 1078 if (instance->flag_ieee) {
1079 sge_sz = sizeof(struct megasas_sge_skinny);
1080 }
1081
b1df99d9 1082 /*
d532dbe2 1083 * Main frame can contain 2 SGEs for 64-bit SGLs and
1084 * 3 SGEs for 32-bit SGLs for ldio &
1085 * 1 SGEs for 64-bit SGLs and
1086 * 2 SGEs for 32-bit SGLs for pthru frame
1087 */
1088 if (unlikely(frame_type == PTHRU_FRAME)) {
f4c9a131
YB		 1089 if (instance->flag_ieee == 1) {
1090 num_cnt = sge_count - 1;
1091 } else if (IS_DMA64)
d532dbe2 1092 num_cnt = sge_count - 1;
1093 else
1094 num_cnt = sge_count - 2;
1095 } else {
f4c9a131
YB		 1096 if (instance->flag_ieee == 1) {
1097 num_cnt = sge_count - 1;
1098 } else if (IS_DMA64)
d532dbe2 1099 num_cnt = sge_count - 2;
1100 else
1101 num_cnt = sge_count - 3;
1102 }
b1df99d9
SP		 1103
1104 if(num_cnt>0){
1105 sge_bytes = sge_sz * num_cnt;
1106
1107 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1108 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1109 }
1110 /* Main frame */
1111 frame_count +=1;
1112
1113 if (frame_count > 7)
1114 frame_count = 8;
1115 return frame_count;
1116}
1117
c4a3e0a5
BS		 1118/**
1119 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1120 * @instance: Adapter soft state
1121 * @scp: SCSI command
1122 * @cmd: Command to be prepared in
1123 *
1124 * This function prepares CDB commands. These are typcially pass-through
1125 * commands to the devices.
1126 */
858119e1 1127static int
c4a3e0a5
BS		 1128megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1129 struct megasas_cmd *cmd)
1130{
c4a3e0a5
BS		 1131 u32 is_logical;
1132 u32 device_id;
1133 u16 flags = 0;
1134 struct megasas_pthru_frame *pthru;
1135
1136 is_logical = MEGASAS_IS_LOGICAL(scp);
1137 device_id = MEGASAS_DEV_INDEX(instance, scp);
1138 pthru = (struct megasas_pthru_frame *)cmd->frame;
1139
1140 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1141 flags = MFI_FRAME_DIR_WRITE;
1142 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1143 flags = MFI_FRAME_DIR_READ;
1144 else if (scp->sc_data_direction == PCI_DMA_NONE)
1145 flags = MFI_FRAME_DIR_NONE;
1146
f4c9a131
YB		 1147 if (instance->flag_ieee == 1) {
1148 flags |= MFI_FRAME_IEEE;
1149 }
1150
c4a3e0a5
BS		 1151 /*
1152 * Prepare the DCDB frame
1153 */
1154 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1155 pthru->cmd_status = 0x0;
1156 pthru->scsi_status = 0x0;
1157 pthru->target_id = device_id;
1158 pthru->lun = scp->device->lun;
1159 pthru->cdb_len = scp->cmd_len;
1160 pthru->timeout = 0;
780a3762 1161 pthru->pad_0 = 0;
94cd65dd
SS		 1162 pthru->flags = cpu_to_le16(flags);
1163 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
c4a3e0a5
BS		 1164
1165 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1166
8d568253
YB		 1167 /*
1168 * If the command is for the tape device, set the
1169 * pthru timeout to the os layer timeout value.
1170 */
1171 if (scp->device->type == TYPE_TAPE) {
1172 if ((scp->request->timeout / HZ) > 0xFFFF)
1173 pthru->timeout = 0xFFFF;
1174 else
94cd65dd 1175 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
8d568253
YB		 1176 }
1177
c4a3e0a5
BS		 1178 /*
1179 * Construct SGL
1180 */
f4c9a131 1181 if (instance->flag_ieee == 1) {
94cd65dd 1182 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
f4c9a131
YB		 1183 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1184 &pthru->sgl);
1185 } else if (IS_DMA64) {
94cd65dd 1186 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
c4a3e0a5
BS		 1187 pthru->sge_count = megasas_make_sgl64(instance, scp,
1188 &pthru->sgl);
1189 } else
1190 pthru->sge_count = megasas_make_sgl32(instance, scp,
1191 &pthru->sgl);
1192
bdc6fb8d
YB		 1193 if (pthru->sge_count > instance->max_num_sge) {
1194 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1195 pthru->sge_count);
1196 return 0;
1197 }
1198
c4a3e0a5
BS		 1199 /*
1200 * Sense info specific
1201 */
1202 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
94cd65dd
SS		 1203 pthru->sense_buf_phys_addr_hi =
1204 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1205 pthru->sense_buf_phys_addr_lo =
1206 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
c4a3e0a5 1207
c4a3e0a5
BS		 1208 /*
1209 * Compute the total number of frames this command consumes. FW uses
1210 * this number to pull sufficient number of frames from host memory.
1211 */
f4c9a131 1212 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
d532dbe2 1213 PTHRU_FRAME);
c4a3e0a5
BS		 1214
1215 return cmd->frame_count;
1216}
1217
1218/**
1219 * megasas_build_ldio - Prepares IOs to logical devices
1220 * @instance: Adapter soft state
1221 * @scp: SCSI command
fd589a8f 1222 * @cmd: Command to be prepared
c4a3e0a5
BS		 1223 *
1224 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1225 */
858119e1 1226static int
c4a3e0a5
BS		 1227megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1228 struct megasas_cmd *cmd)
1229{
c4a3e0a5
BS		 1230 u32 device_id;
1231 u8 sc = scp->cmnd[0];
1232 u16 flags = 0;
1233 struct megasas_io_frame *ldio;
1234
1235 device_id = MEGASAS_DEV_INDEX(instance, scp);
1236 ldio = (struct megasas_io_frame *)cmd->frame;
1237
1238 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1239 flags = MFI_FRAME_DIR_WRITE;
1240 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1241 flags = MFI_FRAME_DIR_READ;
1242
f4c9a131
YB		 1243 if (instance->flag_ieee == 1) {
1244 flags |= MFI_FRAME_IEEE;
1245 }
1246
c4a3e0a5 1247 /*
b1df99d9 1248 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
c4a3e0a5
BS		 1249 */
1250 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1251 ldio->cmd_status = 0x0;
1252 ldio->scsi_status = 0x0;
1253 ldio->target_id = device_id;
1254 ldio->timeout = 0;
1255 ldio->reserved_0 = 0;
1256 ldio->pad_0 = 0;
94cd65dd 1257 ldio->flags = cpu_to_le16(flags);
c4a3e0a5
BS		 1258 ldio->start_lba_hi = 0;
1259 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1260
1261 /*
1262 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1263 */
1264 if (scp->cmd_len == 6) {
94cd65dd
SS		 1265 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1266 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1267 ((u32) scp->cmnd[2] << 8) |
1268 (u32) scp->cmnd[3]);
c4a3e0a5 1269
94cd65dd 1270 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
c4a3e0a5
BS		 1271 }
1272
1273 /*
1274 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1275 */
1276 else if (scp->cmd_len == 10) {
94cd65dd
SS		 1277 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1278 ((u32) scp->cmnd[7] << 8));
1279 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1280 ((u32) scp->cmnd[3] << 16) |
1281 ((u32) scp->cmnd[4] << 8) |
1282 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1283 }
1284
1285 /*
1286 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1287 */
1288 else if (scp->cmd_len == 12) {
94cd65dd
SS		 1289 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1290 ((u32) scp->cmnd[7] << 16) |
1291 ((u32) scp->cmnd[8] << 8) |
1292 (u32) scp->cmnd[9]);
c4a3e0a5 1293
94cd65dd
SS		 1294 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1295 ((u32) scp->cmnd[3] << 16) |
1296 ((u32) scp->cmnd[4] << 8) |
1297 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1298 }
1299
1300 /*
1301 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1302 */
1303 else if (scp->cmd_len == 16) {
94cd65dd
SS		 1304 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1305 ((u32) scp->cmnd[11] << 16) |
1306 ((u32) scp->cmnd[12] << 8) |
1307 (u32) scp->cmnd[13]);
c4a3e0a5 1308
94cd65dd
SS		 1309 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1310 ((u32) scp->cmnd[7] << 16) |
1311 ((u32) scp->cmnd[8] << 8) |
1312 (u32) scp->cmnd[9]);
c4a3e0a5 1313
94cd65dd
SS		 1314 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1315 ((u32) scp->cmnd[3] << 16) |
1316 ((u32) scp->cmnd[4] << 8) |
1317 (u32) scp->cmnd[5]);
c4a3e0a5
BS		 1318
1319 }
1320
1321 /*
1322 * Construct SGL
1323 */
f4c9a131 1324 if (instance->flag_ieee) {
94cd65dd 1325 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
f4c9a131
YB		 1326 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1327 &ldio->sgl);
1328 } else if (IS_DMA64) {
94cd65dd 1329 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
c4a3e0a5
BS		 1330 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1331 } else
1332 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1333
bdc6fb8d
YB		 1334 if (ldio->sge_count > instance->max_num_sge) {
1335 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1336 ldio->sge_count);
1337 return 0;
1338 }
1339
c4a3e0a5
BS		 1340 /*
1341 * Sense info specific
1342 */
1343 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1344 ldio->sense_buf_phys_addr_hi = 0;
94cd65dd 1345 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
c4a3e0a5 1346
b1df99d9
SP		 1347 /*
1348 * Compute the total number of frames this command consumes. FW uses
1349 * this number to pull sufficient number of frames from host memory.
1350 */
f4c9a131
YB		 1351 cmd->frame_count = megasas_get_frame_count(instance,
1352 ldio->sge_count, IO_FRAME);
c4a3e0a5
BS		 1353
1354 return cmd->frame_count;
1355}
1356
1357/**
cb59aa6a
SP		 1358 * megasas_is_ldio - Checks if the cmd is for logical drive
1359 * @scmd: SCSI command
0d49016b 1360 *
cb59aa6a 1361 * Called by megasas_queue_command to find out if the command to be queued
0d49016b 1362 * is a logical drive command
c4a3e0a5 1363 */
9c915a8c 1364inline int megasas_is_ldio(struct scsi_cmnd *cmd)
c4a3e0a5 1365{
cb59aa6a
SP		 1366 if (!MEGASAS_IS_LOGICAL(cmd))
1367 return 0;
1368 switch (cmd->cmnd[0]) {
1369 case READ_10:
1370 case WRITE_10:
1371 case READ_12:
1372 case WRITE_12:
1373 case READ_6:
1374 case WRITE_6:
1375 case READ_16:
1376 case WRITE_16:
1377 return 1;
1378 default:
1379 return 0;
c4a3e0a5 1380 }
c4a3e0a5
BS		 1381}
1382
658dcedb
SP		 1383 /**
1384 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1385 * in FW
1386 * @instance: Adapter soft state
1387 */
1388static inline void
1389megasas_dump_pending_frames(struct megasas_instance *instance)
1390{
1391 struct megasas_cmd *cmd;
1392 int i,n;
1393 union megasas_sgl *mfi_sgl;
1394 struct megasas_io_frame *ldio;
1395 struct megasas_pthru_frame *pthru;
1396 u32 sgcount;
1397 u32 max_cmd = instance->max_fw_cmds;
1398
1399 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1400 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1401 if (IS_DMA64)
1402 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1403 else
1404 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1405
1406 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1407 for (i = 0; i < max_cmd; i++) {
1408 cmd = instance->cmd_list[i];
1409 if(!cmd->scmd)
1410 continue;
1411 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1412 if (megasas_is_ldio(cmd->scmd)){
1413 ldio = (struct megasas_io_frame *)cmd->frame;
1414 mfi_sgl = &ldio->sgl;
1415 sgcount = ldio->sge_count;
94cd65dd
SS		 1416 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1417 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1418 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1419 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1420 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
658dcedb
SP		 1421 }
1422 else {
1423 pthru = (struct megasas_pthru_frame *) cmd->frame;
1424 mfi_sgl = &pthru->sgl;
1425 sgcount = pthru->sge_count;
94cd65dd
SS		 1426 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1427 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1428 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1429 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1430 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
658dcedb
SP		 1431 }
1432 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1433 for (n = 0; n < sgcount; n++){
1434 if (IS_DMA64)
94cd65dd
SS		 1435 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1436 le32_to_cpu(mfi_sgl->sge64[n].length),
1437 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
658dcedb 1438 else
94cd65dd
SS		 1439 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1440 le32_to_cpu(mfi_sgl->sge32[n].length),
1441 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
658dcedb
SP		 1442 }
1443 }
1444 printk(KERN_ERR "\n");
1445 } /*for max_cmd*/
1446 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1447 for (i = 0; i < max_cmd; i++) {
1448
1449 cmd = instance->cmd_list[i];
1450
1451 if(cmd->sync_cmd == 1){
1452 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1453 }
1454 }
1455 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1456}
1457
cd50ba8e 1458u32
1459megasas_build_and_issue_cmd(struct megasas_instance *instance,
1460 struct scsi_cmnd *scmd)
1461{
1462 struct megasas_cmd *cmd;
1463 u32 frame_count;
1464
1465 cmd = megasas_get_cmd(instance);
1466 if (!cmd)
1467 return SCSI_MLQUEUE_HOST_BUSY;
1468
1469 /*
1470 * Logical drive command
1471 */
1472 if (megasas_is_ldio(scmd))
1473 frame_count = megasas_build_ldio(instance, scmd, cmd);
1474 else
1475 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1476
1477 if (!frame_count)
1478 goto out_return_cmd;
1479
1480 cmd->scmd = scmd;
1481 scmd->SCp.ptr = (char *)cmd;
1482
1483 /*
1484 * Issue the command to the FW
1485 */
1486 atomic_inc(&instance->fw_outstanding);
1487
1488 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1489 cmd->frame_count-1, instance->reg_set);
cd50ba8e 1490
1491 return 0;
1492out_return_cmd:
1493 megasas_return_cmd(instance, cmd);
1494 return 1;
1495}
1496
1497
c4a3e0a5
BS		 1498/**
1499 * megasas_queue_command - Queue entry point
1500 * @scmd: SCSI command to be queued
1501 * @done: Callback entry point
1502 */
1503static int
f281233d 1504megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
c4a3e0a5 1505{
c4a3e0a5 1506 struct megasas_instance *instance;
39a98554 1507 unsigned long flags;
c4a3e0a5
BS		 1508
1509 instance = (struct megasas_instance *)
1510 scmd->device->host->hostdata;
af37acfb 1511
39a98554 1512 if (instance->issuepend_done == 0)
af37acfb
SP		 1513 return SCSI_MLQUEUE_HOST_BUSY;
1514
39a98554 1515 spin_lock_irqsave(&instance->hba_lock, flags);
b09e66da
SS		 1516
1517 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1518 spin_unlock_irqrestore(&instance->hba_lock, flags);
1519 scmd->result = DID_ERROR << 16;
1520 done(scmd);
1521 return 0;
1522 }
1523
39a98554 1524 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1525 spin_unlock_irqrestore(&instance->hba_lock, flags);
1526 return SCSI_MLQUEUE_HOST_BUSY;
1527 }
1528
1529 spin_unlock_irqrestore(&instance->hba_lock, flags);
1530
c4a3e0a5
BS		 1531 scmd->scsi_done = done;
1532 scmd->result = 0;
1533
cb59aa6a
SP		 1534 if (MEGASAS_IS_LOGICAL(scmd) &&
1535 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1536 scmd->result = DID_BAD_TARGET << 16;
1537 goto out_done;
c4a3e0a5
BS		 1538 }
1539
02b01e01
SP		 1540 switch (scmd->cmnd[0]) {
1541 case SYNCHRONIZE_CACHE:
1542 /*
1543 * FW takes care of flush cache on its own
1544 * No need to send it down
1545 */
1546 scmd->result = DID_OK << 16;
1547 goto out_done;
1548 default:
1549 break;
1550 }
1551
cd50ba8e 1552 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1553 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
cb59aa6a 1554 return SCSI_MLQUEUE_HOST_BUSY;
cd50ba8e 1555 }
c4a3e0a5
BS		 1556
1557 return 0;
cb59aa6a 1558
cb59aa6a
SP		 1559 out_done:
1560 done(scmd);
1561 return 0;
c4a3e0a5
BS		 1562}
1563
f281233d
JG		 1564static DEF_SCSI_QCMD(megasas_queue_command)
1565
044833b5
YB		 1566static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1567{
1568 int i;
1569
1570 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1571
1572 if ((megasas_mgmt_info.instance[i]) &&
1573 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1574 return megasas_mgmt_info.instance[i];
1575 }
1576
1577 return NULL;
1578}
1579
147aab6a
CH		 1580static int megasas_slave_configure(struct scsi_device *sdev)
1581{
044833b5
YB		 1582 u16 pd_index = 0;
1583 struct megasas_instance *instance ;
1584
1585 instance = megasas_lookup_instance(sdev->host->host_no);
1586
147aab6a 1587 /*
044833b5
YB		 1588 * Don't export physical disk devices to the disk driver.
1589 *
1590 * FIXME: Currently we don't export them to the midlayer at all.
1591 * That will be fixed once LSI engineers have audited the
1592 * firmware for possible issues.
1593 */
1594 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1595 sdev->type == TYPE_DISK) {
1596 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1597 sdev->id;
1598 if (instance->pd_list[pd_index].driveState ==
1599 MR_PD_STATE_SYSTEM) {
1600 blk_queue_rq_timeout(sdev->request_queue,
1601 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1602 return 0;
1603 }
147aab6a 1604 return -ENXIO;
044833b5 1605 }
e5b3a65f
CH		 1606
1607 /*
044833b5
YB		 1608 * The RAID firmware may require extended timeouts.
1609 */
1610 blk_queue_rq_timeout(sdev->request_queue,
1611 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1612 return 0;
1613}
1614
1615static int megasas_slave_alloc(struct scsi_device *sdev)
1616{
1617 u16 pd_index = 0;
1618 struct megasas_instance *instance ;
1619 instance = megasas_lookup_instance(sdev->host->host_no);
1620 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1621 (sdev->type == TYPE_DISK)) {
1622 /*
1623 * Open the OS scan to the SYSTEM PD
1624 */
1625 pd_index =
1626 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1627 sdev->id;
1628 if ((instance->pd_list[pd_index].driveState ==
1629 MR_PD_STATE_SYSTEM) &&
1630 (instance->pd_list[pd_index].driveType ==
1631 TYPE_DISK)) {
1632 return 0;
1633 }
1634 return -ENXIO;
1635 }
147aab6a
CH		 1636 return 0;
1637}
1638
9c915a8c 1639void megaraid_sas_kill_hba(struct megasas_instance *instance)
39a98554 1640{
1641 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
9c915a8c 1642 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
36807e67 1643 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
21d3c710
SS		 1644 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1645 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 1646 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
39a98554 1647 } else {
9c915a8c 1648 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1649 }
1650}
1651
1652 /**
1653 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1654 * restored to max value
1655 * @instance: Adapter soft state
1656 *
1657 */
1658void
1659megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1660{
1661 unsigned long flags;
1662 if (instance->flag & MEGASAS_FW_BUSY
c5daa6a9 1663 && time_after(jiffies, instance->last_time + 5 * HZ)
1664 && atomic_read(&instance->fw_outstanding) <
1665 instance->throttlequeuedepth + 1) {
9c915a8c 1666
1667 spin_lock_irqsave(instance->host->host_lock, flags);
1668 instance->flag &= ~MEGASAS_FW_BUSY;
404a8a1a 1669 if (instance->is_imr) {
9c915a8c 1670 instance->host->can_queue =
1671 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1672 } else
1673 instance->host->can_queue =
1674 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1675
1676 spin_unlock_irqrestore(instance->host->host_lock, flags);
39a98554 1677 }
1678}
1679
7343eb65 1680/**
1681 * megasas_complete_cmd_dpc - Returns FW's controller structure
1682 * @instance_addr: Address of adapter soft state
1683 *
1684 * Tasklet to complete cmds
1685 */
1686static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1687{
1688 u32 producer;
1689 u32 consumer;
1690 u32 context;
1691 struct megasas_cmd *cmd;
1692 struct megasas_instance *instance =
1693 (struct megasas_instance *)instance_addr;
1694 unsigned long flags;
1695
1696 /* If we have already declared adapter dead, donot complete cmds */
39a98554 1697 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
7343eb65 1698 return;
1699
1700 spin_lock_irqsave(&instance->completion_lock, flags);
1701
94cd65dd
SS		 1702 producer = le32_to_cpu(*instance->producer);
1703 consumer = le32_to_cpu(*instance->consumer);
7343eb65 1704
1705 while (consumer != producer) {
94cd65dd 1706 context = le32_to_cpu(instance->reply_queue[consumer]);
39a98554 1707 if (context >= instance->max_fw_cmds) {
1708 printk(KERN_ERR "Unexpected context value %x\n",
1709 context);
1710 BUG();
1711 }
7343eb65 1712
1713 cmd = instance->cmd_list[context];
1714
1715 megasas_complete_cmd(instance, cmd, DID_OK);
1716
1717 consumer++;
1718 if (consumer == (instance->max_fw_cmds + 1)) {
1719 consumer = 0;
1720 }
1721 }
1722
94cd65dd 1723 *instance->consumer = cpu_to_le32(producer);
7343eb65 1724
1725 spin_unlock_irqrestore(&instance->completion_lock, flags);
1726
1727 /*
1728 * Check if we can restore can_queue
1729 */
9c915a8c 1730 megasas_check_and_restore_queue_depth(instance);
7343eb65 1731}
1732
707e09bd
YB		 1733static void
1734megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1735
1736static void
1737process_fw_state_change_wq(struct work_struct *work);
1738
1739void megasas_do_ocr(struct megasas_instance *instance)
1740{
1741 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1742 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1743 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
94cd65dd 1744 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
707e09bd 1745 }
d46a3ad6 1746 instance->instancet->disable_intr(instance);
707e09bd
YB		 1747 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1748 instance->issuepend_done = 0;
1749
1750 atomic_set(&instance->fw_outstanding, 0);
1751 megasas_internal_reset_defer_cmds(instance);
1752 process_fw_state_change_wq(&instance->work_init);
1753}
1754
c4a3e0a5
BS		 1755/**
1756 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1757 * @instance: Adapter soft state
1758 *
25985edc 1759 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
c4a3e0a5
BS		 1760 * complete all its outstanding commands. Returns error if one or more IOs
1761 * are pending after this time period. It also marks the controller dead.
1762 */
1763static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1764{
1765 int i;
39a98554 1766 u32 reset_index;
c4a3e0a5 1767 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
39a98554 1768 u8 adprecovery;
1769 unsigned long flags;
1770 struct list_head clist_local;
1771 struct megasas_cmd *reset_cmd;
707e09bd
YB		 1772 u32 fw_state;
1773 u8 kill_adapter_flag;
39a98554 1774
1775 spin_lock_irqsave(&instance->hba_lock, flags);
1776 adprecovery = instance->adprecovery;
1777 spin_unlock_irqrestore(&instance->hba_lock, flags);
1778
1779 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1780
1781 INIT_LIST_HEAD(&clist_local);
1782 spin_lock_irqsave(&instance->hba_lock, flags);
1783 list_splice_init(&instance->internal_reset_pending_q,
1784 &clist_local);
1785 spin_unlock_irqrestore(&instance->hba_lock, flags);
1786
1787 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1788 for (i = 0; i < wait_time; i++) {
1789 msleep(1000);
1790 spin_lock_irqsave(&instance->hba_lock, flags);
1791 adprecovery = instance->adprecovery;
1792 spin_unlock_irqrestore(&instance->hba_lock, flags);
1793 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1794 break;
1795 }
1796
1797 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1798 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1799 spin_lock_irqsave(&instance->hba_lock, flags);
1800 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1801 spin_unlock_irqrestore(&instance->hba_lock, flags);
1802 return FAILED;
1803 }
1804
1805 reset_index = 0;
1806 while (!list_empty(&clist_local)) {
1807 reset_cmd = list_entry((&clist_local)->next,
1808 struct megasas_cmd, list);
1809 list_del_init(&reset_cmd->list);
1810 if (reset_cmd->scmd) {
1811 reset_cmd->scmd->result = DID_RESET << 16;
5cd049a5 1812 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
39a98554 1813 reset_index, reset_cmd,
5cd049a5 1814 reset_cmd->scmd->cmnd[0]);
39a98554 1815
1816 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1817 megasas_return_cmd(instance, reset_cmd);
1818 } else if (reset_cmd->sync_cmd) {
1819 printk(KERN_NOTICE "megasas:%p synch cmds"
1820 "reset queue\n",
1821 reset_cmd);
1822
1823 reset_cmd->cmd_status = ENODATA;
1824 instance->instancet->fire_cmd(instance,
1825 reset_cmd->frame_phys_addr,
1826 0, instance->reg_set);
1827 } else {
1828 printk(KERN_NOTICE "megasas: %p unexpected"
1829 "cmds lst\n",
1830 reset_cmd);
1831 }
1832 reset_index++;
1833 }
1834
1835 return SUCCESS;
1836 }
c4a3e0a5 1837
c007b8b2 1838 for (i = 0; i < resetwaittime; i++) {
c4a3e0a5 1839
e4a082c7
SP		 1840 int outstanding = atomic_read(&instance->fw_outstanding);
1841
1842 if (!outstanding)
c4a3e0a5
BS		 1843 break;
1844
1845 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1846 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
e4a082c7 1847 "commands to complete\n",i,outstanding);
7343eb65 1848 /*
1849 * Call cmd completion routine. Cmd to be
1850 * be completed directly without depending on isr.
1851 */
1852 megasas_complete_cmd_dpc((unsigned long)instance);
c4a3e0a5
BS		 1853 }
1854
1855 msleep(1000);
1856 }
1857
707e09bd
YB		 1858 i = 0;
1859 kill_adapter_flag = 0;
1860 do {
1861 fw_state = instance->instancet->read_fw_status_reg(
1862 instance->reg_set) & MFI_STATE_MASK;
1863 if ((fw_state == MFI_STATE_FAULT) &&
1864 (instance->disableOnlineCtrlReset == 0)) {
1865 if (i == 3) {
1866 kill_adapter_flag = 2;
1867 break;
1868 }
1869 megasas_do_ocr(instance);
1870 kill_adapter_flag = 1;
1871
1872 /* wait for 1 secs to let FW finish the pending cmds */
1873 msleep(1000);
1874 }
1875 i++;
1876 } while (i <= 3);
1877
1878 if (atomic_read(&instance->fw_outstanding) &&
1879 !kill_adapter_flag) {
1880 if (instance->disableOnlineCtrlReset == 0) {
1881
1882 megasas_do_ocr(instance);
1883
1884 /* wait for 5 secs to let FW finish the pending cmds */
1885 for (i = 0; i < wait_time; i++) {
1886 int outstanding =
1887 atomic_read(&instance->fw_outstanding);
1888 if (!outstanding)
1889 return SUCCESS;
1890 msleep(1000);
1891 }
1892 }
1893 }
1894
1895 if (atomic_read(&instance->fw_outstanding) ||
1896 (kill_adapter_flag == 2)) {
39a98554 1897 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
e3bbff9f
SP		 1898 /*
1899 * Send signal to FW to stop processing any pending cmds.
1900 * The controller will be taken offline by the OS now.
1901 */
0c79e681
YB		 1902 if ((instance->pdev->device ==
1903 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1904 (instance->pdev->device ==
1905 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1906 writel(MFI_STOP_ADP,
9c915a8c 1907 &instance->reg_set->doorbell);
0c79e681
YB		 1908 } else {
1909 writel(MFI_STOP_ADP,
e3bbff9f 1910 &instance->reg_set->inbound_doorbell);
0c79e681 1911 }
658dcedb 1912 megasas_dump_pending_frames(instance);
39a98554 1913 spin_lock_irqsave(&instance->hba_lock, flags);
1914 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1915 spin_unlock_irqrestore(&instance->hba_lock, flags);
c4a3e0a5
BS		 1916 return FAILED;
1917 }
1918
39a98554 1919 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1920
c4a3e0a5
BS		 1921 return SUCCESS;
1922}
1923
1924/**
1925 * megasas_generic_reset - Generic reset routine
1926 * @scmd: Mid-layer SCSI command
1927 *
1928 * This routine implements a generic reset handler for device, bus and host
1929 * reset requests. Device, bus and host specific reset handlers can use this
1930 * function after they do their specific tasks.
1931 */
1932static int megasas_generic_reset(struct scsi_cmnd *scmd)
1933{
1934 int ret_val;
1935 struct megasas_instance *instance;
1936
1937 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1938
5cd049a5
CH		 1939 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
1940 scmd->cmnd[0], scmd->retries);
c4a3e0a5 1941
39a98554 1942 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
c4a3e0a5
BS		 1943 printk(KERN_ERR "megasas: cannot recover from previous reset "
1944 "failures\n");
1945 return FAILED;
1946 }
1947
c4a3e0a5 1948 ret_val = megasas_wait_for_outstanding(instance);
c4a3e0a5
BS		 1949 if (ret_val == SUCCESS)
1950 printk(KERN_NOTICE "megasas: reset successful \n");
1951 else
1952 printk(KERN_ERR "megasas: failed to do reset\n");
1953
c4a3e0a5
BS		 1954 return ret_val;
1955}
1956
05e9ebbe
SP		 1957/**
1958 * megasas_reset_timer - quiesce the adapter if required
1959 * @scmd: scsi cmnd
1960 *
1961 * Sets the FW busy flag and reduces the host->can_queue if the
1962 * cmd has not been completed within the timeout period.
1963 */
1964static enum
242f9dcb 1965blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
05e9ebbe 1966{
05e9ebbe
SP		 1967 struct megasas_instance *instance;
1968 unsigned long flags;
1969
1970 if (time_after(jiffies, scmd->jiffies_at_alloc +
1971 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
242f9dcb 1972 return BLK_EH_NOT_HANDLED;
05e9ebbe
SP		 1973 }
1974
f575c5d3 1975 instance = (struct megasas_instance *)scmd->device->host->hostdata;
05e9ebbe
SP		 1976 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1977 /* FW is busy, throttle IO */
1978 spin_lock_irqsave(instance->host->host_lock, flags);
1979
c5daa6a9 1980 instance->host->can_queue = instance->throttlequeuedepth;
05e9ebbe
SP		 1981 instance->last_time = jiffies;
1982 instance->flag |= MEGASAS_FW_BUSY;
1983
1984 spin_unlock_irqrestore(instance->host->host_lock, flags);
1985 }
242f9dcb 1986 return BLK_EH_RESET_TIMER;
05e9ebbe
SP		 1987}
1988
c4a3e0a5
BS		 1989/**
1990 * megasas_reset_device - Device reset handler entry point
1991 */
1992static int megasas_reset_device(struct scsi_cmnd *scmd)
1993{
1994 int ret;
1995
1996 /*
1997 * First wait for all commands to complete
1998 */
1999 ret = megasas_generic_reset(scmd);
2000
2001 return ret;
2002}
2003
2004/**
2005 * megasas_reset_bus_host - Bus & host reset handler entry point
2006 */
2007static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2008{
2009 int ret;
9c915a8c 2010 struct megasas_instance *instance;
2011 instance = (struct megasas_instance *)scmd->device->host->hostdata;
c4a3e0a5
BS		 2012
2013 /*
80682fa9 2014 * First wait for all commands to complete
c4a3e0a5 2015 */
36807e67 2016 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
21d3c710
SS		 2017 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2018 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
9c915a8c 2019 ret = megasas_reset_fusion(scmd->device->host);
2020 else
2021 ret = megasas_generic_reset(scmd);
c4a3e0a5
BS		 2022
2023 return ret;
2024}
2025
cf62a0a5
SP		 2026/**
2027 * megasas_bios_param - Returns disk geometry for a disk
2028 * @sdev: device handle
2029 * @bdev: block device
2030 * @capacity: drive capacity
2031 * @geom: geometry parameters
2032 */
2033static int
2034megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2035 sector_t capacity, int geom[])
2036{
2037 int heads;
2038 int sectors;
2039 sector_t cylinders;
2040 unsigned long tmp;
2041 /* Default heads (64) & sectors (32) */
2042 heads = 64;
2043 sectors = 32;
2044
2045 tmp = heads * sectors;
2046 cylinders = capacity;
2047
2048 sector_div(cylinders, tmp);
2049
2050 /*
2051 * Handle extended translation size for logical drives > 1Gb
2052 */
2053
2054 if (capacity >= 0x200000) {
2055 heads = 255;
2056 sectors = 63;
2057 tmp = heads*sectors;
2058 cylinders = capacity;
2059 sector_div(cylinders, tmp);
2060 }
2061
2062 geom[0] = heads;
2063 geom[1] = sectors;
2064 geom[2] = cylinders;
2065
2066 return 0;
2067}
2068
7e8a75f4
YB		 2069static void megasas_aen_polling(struct work_struct *work);
2070
c4a3e0a5
BS		 2071/**
2072 * megasas_service_aen - Processes an event notification
2073 * @instance: Adapter soft state
2074 * @cmd: AEN command completed by the ISR
2075 *
2076 * For AEN, driver sends a command down to FW that is held by the FW till an
2077 * event occurs. When an event of interest occurs, FW completes the command
2078 * that it was previously holding.
2079 *
2080 * This routines sends SIGIO signal to processes that have registered with the
2081 * driver for AEN.
2082 */
2083static void
2084megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2085{
c3518837 2086 unsigned long flags;
c4a3e0a5
BS		 2087 /*
2088 * Don't signal app if it is just an aborted previously registered aen
2089 */
c3518837
YB		 2090 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2091 spin_lock_irqsave(&poll_aen_lock, flags);
2092 megasas_poll_wait_aen = 1;
2093 spin_unlock_irqrestore(&poll_aen_lock, flags);
2094 wake_up(&megasas_poll_wait);
c4a3e0a5 2095 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
c3518837 2096 }
c4a3e0a5
BS		 2097 else
2098 cmd->abort_aen = 0;
2099
2100 instance->aen_cmd = NULL;
2101 megasas_return_cmd(instance, cmd);
7e8a75f4 2102
39a98554 2103 if ((instance->unload == 0) &&
2104 ((instance->issuepend_done == 1))) {
7e8a75f4
YB		 2105 struct megasas_aen_event *ev;
2106 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2107 if (!ev) {
2108 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2109 } else {
2110 ev->instance = instance;
2111 instance->ev = ev;
c1d390d8
XF		 2112 INIT_DELAYED_WORK(&ev->hotplug_work,
2113 megasas_aen_polling);
2114 schedule_delayed_work(&ev->hotplug_work, 0);
7e8a75f4
YB		 2115 }
2116 }
c4a3e0a5
BS		 2117}
2118
4bcde509 2119static int megasas_change_queue_depth(struct scsi_device *sdev,
2120 int queue_depth, int reason)
2121{
2122 if (reason != SCSI_QDEPTH_DEFAULT)
2123 return -EOPNOTSUPP;
2124
2125 if (queue_depth > sdev->host->can_queue)
2126 queue_depth = sdev->host->can_queue;
2127 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2128 queue_depth);
2129
2130 return queue_depth;
2131}
2132
c4a3e0a5
BS		 2133/*
2134 * Scsi host template for megaraid_sas driver
2135 */
2136static struct scsi_host_template megasas_template = {
2137
2138 .module = THIS_MODULE,
f28cd7cf 2139 .name = "LSI SAS based MegaRAID driver",
c4a3e0a5 2140 .proc_name = "megaraid_sas",
147aab6a 2141 .slave_configure = megasas_slave_configure,
044833b5 2142 .slave_alloc = megasas_slave_alloc,
c4a3e0a5
BS		 2143 .queuecommand = megasas_queue_command,
2144 .eh_device_reset_handler = megasas_reset_device,
2145 .eh_bus_reset_handler = megasas_reset_bus_host,
2146 .eh_host_reset_handler = megasas_reset_bus_host,
05e9ebbe 2147 .eh_timed_out = megasas_reset_timer,
cf62a0a5 2148 .bios_param = megasas_bios_param,
c4a3e0a5 2149 .use_clustering = ENABLE_CLUSTERING,
4bcde509 2150 .change_queue_depth = megasas_change_queue_depth,
c4a3e0a5
BS		 2151};
2152
2153/**
2154 * megasas_complete_int_cmd - Completes an internal command
2155 * @instance: Adapter soft state
2156 * @cmd: Command to be completed
2157 *
2158 * The megasas_issue_blocked_cmd() function waits for a command to complete
2159 * after it issues a command. This function wakes up that waiting routine by
2160 * calling wake_up() on the wait queue.
2161 */
2162static void
2163megasas_complete_int_cmd(struct megasas_instance *instance,
2164 struct megasas_cmd *cmd)
2165{
2166 cmd->cmd_status = cmd->frame->io.cmd_status;
2167
2168 if (cmd->cmd_status == ENODATA) {
2169 cmd->cmd_status = 0;
2170 }
2171 wake_up(&instance->int_cmd_wait_q);
2172}
2173
2174/**
2175 * megasas_complete_abort - Completes aborting a command
2176 * @instance: Adapter soft state
2177 * @cmd: Cmd that was issued to abort another cmd
2178 *
0d49016b 2179 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2180 * after it issues an abort on a previously issued command. This function
c4a3e0a5
BS		 2181 * wakes up all functions waiting on the same wait queue.
2182 */
2183static void
2184megasas_complete_abort(struct megasas_instance *instance,
2185 struct megasas_cmd *cmd)
2186{
2187 if (cmd->sync_cmd) {
2188 cmd->sync_cmd = 0;
2189 cmd->cmd_status = 0;
2190 wake_up(&instance->abort_cmd_wait_q);
2191 }
2192
2193 return;
2194}
2195
c4a3e0a5
BS		 2196/**
2197 * megasas_complete_cmd - Completes a command
2198 * @instance: Adapter soft state
2199 * @cmd: Command to be completed
0d49016b 2200 * @alt_status: If non-zero, use this value as status to
c4a3e0a5
BS		 2201 * SCSI mid-layer instead of the value returned
2202 * by the FW. This should be used if caller wants
2203 * an alternate status (as in the case of aborted
2204 * commands)
2205 */
9c915a8c 2206void
c4a3e0a5
BS		 2207megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2208 u8 alt_status)
2209{
2210 int exception = 0;
2211 struct megasas_header *hdr = &cmd->frame->hdr;
c3518837 2212 unsigned long flags;
9c915a8c 2213 struct fusion_context *fusion = instance->ctrl_context;
94cd65dd 2214 u32 opcode;
c4a3e0a5 2215
39a98554 2216 /* flag for the retry reset */
2217 cmd->retry_for_fw_reset = 0;
2218
05e9ebbe
SP		 2219 if (cmd->scmd)
2220 cmd->scmd->SCp.ptr = NULL;
c4a3e0a5
BS		 2221
2222 switch (hdr->cmd) {
e5f93a36 2223 case MFI_CMD_INVALID:
2224 /* Some older 1068 controller FW may keep a pended
2225 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2226 when booting the kdump kernel. Ignore this command to
2227 prevent a kernel panic on shutdown of the kdump kernel. */
2228 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2229 "completed.\n");
2230 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2231 "other than PERC5, please upgrade your firmware.\n");
2232 break;
c4a3e0a5
BS		 2233 case MFI_CMD_PD_SCSI_IO:
2234 case MFI_CMD_LD_SCSI_IO:
2235
2236 /*
2237 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2238 * issued either through an IO path or an IOCTL path. If it
2239 * was via IOCTL, we will send it to internal completion.
2240 */
2241 if (cmd->sync_cmd) {
2242 cmd->sync_cmd = 0;
2243 megasas_complete_int_cmd(instance, cmd);
2244 break;
2245 }
2246
c4a3e0a5
BS		 2247 case MFI_CMD_LD_READ:
2248 case MFI_CMD_LD_WRITE:
2249
2250 if (alt_status) {
2251 cmd->scmd->result = alt_status << 16;
2252 exception = 1;
2253 }
2254
2255 if (exception) {
2256
e4a082c7 2257 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2258
155d98f0 2259 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2260 cmd->scmd->scsi_done(cmd->scmd);
2261 megasas_return_cmd(instance, cmd);
2262
2263 break;
2264 }
2265
2266 switch (hdr->cmd_status) {
2267
2268 case MFI_STAT_OK:
2269 cmd->scmd->result = DID_OK << 16;
2270 break;
2271
2272 case MFI_STAT_SCSI_IO_FAILED:
2273 case MFI_STAT_LD_INIT_IN_PROGRESS:
2274 cmd->scmd->result =
2275 (DID_ERROR << 16) | hdr->scsi_status;
2276 break;
2277
2278 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2279
2280 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2281
2282 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2283 memset(cmd->scmd->sense_buffer, 0,
2284 SCSI_SENSE_BUFFERSIZE);
2285 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2286 hdr->sense_len);
2287
2288 cmd->scmd->result |= DRIVER_SENSE << 24;
2289 }
2290
2291 break;
2292
2293 case MFI_STAT_LD_OFFLINE:
2294 case MFI_STAT_DEVICE_NOT_FOUND:
2295 cmd->scmd->result = DID_BAD_TARGET << 16;
2296 break;
2297
2298 default:
2299 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2300 hdr->cmd_status);
2301 cmd->scmd->result = DID_ERROR << 16;
2302 break;
2303 }
2304
e4a082c7 2305 atomic_dec(&instance->fw_outstanding);
c4a3e0a5 2306
155d98f0 2307 scsi_dma_unmap(cmd->scmd);
c4a3e0a5
BS		 2308 cmd->scmd->scsi_done(cmd->scmd);
2309 megasas_return_cmd(instance, cmd);
2310
2311 break;
2312
2313 case MFI_CMD_SMP:
2314 case MFI_CMD_STP:
2315 case MFI_CMD_DCMD:
94cd65dd 2316 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
9c915a8c 2317 /* Check for LD map update */
94cd65dd
SS		 2318 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2319 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
bc93d425 2320 fusion->fast_path_io = 0;
9c915a8c 2321 spin_lock_irqsave(instance->host->host_lock, flags);
2322 if (cmd->frame->hdr.cmd_status != 0) {
2323 if (cmd->frame->hdr.cmd_status !=
2324 MFI_STAT_NOT_FOUND)
2325 printk(KERN_WARNING "megasas: map sync"
2326 "failed, status = 0x%x.\n",
2327 cmd->frame->hdr.cmd_status);
2328 else {
2329 megasas_return_cmd(instance, cmd);
2330 spin_unlock_irqrestore(
2331 instance->host->host_lock,
2332 flags);
2333 break;
2334 }
2335 } else
2336 instance->map_id++;
2337 megasas_return_cmd(instance, cmd);
bc93d425
SS		 2338
2339 /*
2340 * Set fast path IO to ZERO.
2341 * Validate Map will set proper value.
2342 * Meanwhile all IOs will go as LD IO.
2343 */
2344 if (MR_ValidateMapInfo(instance))
9c915a8c 2345 fusion->fast_path_io = 1;
2346 else
2347 fusion->fast_path_io = 0;
2348 megasas_sync_map_info(instance);
2349 spin_unlock_irqrestore(instance->host->host_lock,
2350 flags);
2351 break;
2352 }
94cd65dd
SS		 2353 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2354 opcode == MR_DCMD_CTRL_EVENT_GET) {
c3518837
YB		 2355 spin_lock_irqsave(&poll_aen_lock, flags);
2356 megasas_poll_wait_aen = 0;
2357 spin_unlock_irqrestore(&poll_aen_lock, flags);
2358 }
c4a3e0a5
BS		 2359
2360 /*
2361 * See if got an event notification
2362 */
94cd65dd 2363 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
c4a3e0a5
BS		 2364 megasas_service_aen(instance, cmd);
2365 else
2366 megasas_complete_int_cmd(instance, cmd);
2367
2368 break;
2369
2370 case MFI_CMD_ABORT:
2371 /*
2372 * Cmd issued to abort another cmd returned
2373 */
2374 megasas_complete_abort(instance, cmd);
2375 break;
2376
2377 default:
2378 printk("megasas: Unknown command completed! [0x%X]\n",
2379 hdr->cmd);
2380 break;
2381 }
2382}
2383
39a98554 2384/**
2385 * megasas_issue_pending_cmds_again - issue all pending cmds
2386 * in FW again because of the fw reset
2387 * @instance: Adapter soft state
2388 */
2389static inline void
2390megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2391{
2392 struct megasas_cmd *cmd;
2393 struct list_head clist_local;
2394 union megasas_evt_class_locale class_locale;
2395 unsigned long flags;
2396 u32 seq_num;
2397
2398 INIT_LIST_HEAD(&clist_local);
2399 spin_lock_irqsave(&instance->hba_lock, flags);
2400 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2401 spin_unlock_irqrestore(&instance->hba_lock, flags);
2402
2403 while (!list_empty(&clist_local)) {
2404 cmd = list_entry((&clist_local)->next,
2405 struct megasas_cmd, list);
2406 list_del_init(&cmd->list);
2407
2408 if (cmd->sync_cmd || cmd->scmd) {
2409 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2410 "detected to be pending while HBA reset.\n",
2411 cmd, cmd->scmd, cmd->sync_cmd);
2412
2413 cmd->retry_for_fw_reset++;
2414
2415 if (cmd->retry_for_fw_reset == 3) {
2416 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2417 "was tried multiple times during reset."
2418 "Shutting down the HBA\n",
2419 cmd, cmd->scmd, cmd->sync_cmd);
2420 megaraid_sas_kill_hba(instance);
2421
2422 instance->adprecovery =
2423 MEGASAS_HW_CRITICAL_ERROR;
2424 return;
2425 }
2426 }
2427
2428 if (cmd->sync_cmd == 1) {
2429 if (cmd->scmd) {
2430 printk(KERN_NOTICE "megaraid_sas: unexpected"
2431 "cmd attached to internal command!\n");
2432 }
2433 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2434 "on the internal reset queue,"
2435 "issue it again.\n", cmd);
2436 cmd->cmd_status = ENODATA;
2437 instance->instancet->fire_cmd(instance,
2438 cmd->frame_phys_addr ,
2439 0, instance->reg_set);
2440 } else if (cmd->scmd) {
5cd049a5 2441 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
39a98554 2442 "detected on the internal queue, issue again.\n",
5cd049a5 2443 cmd, cmd->scmd->cmnd[0]);
39a98554 2444
2445 atomic_inc(&instance->fw_outstanding);
2446 instance->instancet->fire_cmd(instance,
2447 cmd->frame_phys_addr,
2448 cmd->frame_count-1, instance->reg_set);
2449 } else {
2450 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2451 "internal reset defer list while re-issue!!\n",
2452 cmd);
2453 }
2454 }
2455
2456 if (instance->aen_cmd) {
2457 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2458 megasas_return_cmd(instance, instance->aen_cmd);
2459
2460 instance->aen_cmd = NULL;
2461 }
2462
2463 /*
2464 * Initiate AEN (Asynchronous Event Notification)
2465 */
2466 seq_num = instance->last_seq_num;
2467 class_locale.members.reserved = 0;
2468 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2469 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2470
2471 megasas_register_aen(instance, seq_num, class_locale.word);
2472}
2473
2474/**
2475 * Move the internal reset pending commands to a deferred queue.
2476 *
2477 * We move the commands pending at internal reset time to a
2478 * pending queue. This queue would be flushed after successful
2479 * completion of the internal reset sequence. if the internal reset
2480 * did not complete in time, the kernel reset handler would flush
2481 * these commands.
2482 **/
2483static void
2484megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2485{
2486 struct megasas_cmd *cmd;
2487 int i;
2488 u32 max_cmd = instance->max_fw_cmds;
2489 u32 defer_index;
2490 unsigned long flags;
2491
2492 defer_index = 0;
2493 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2494 for (i = 0; i < max_cmd; i++) {
2495 cmd = instance->cmd_list[i];
2496 if (cmd->sync_cmd == 1 || cmd->scmd) {
2497 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2498 "on the defer queue as internal\n",
2499 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2500
2501 if (!list_empty(&cmd->list)) {
2502 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2503 " moving this cmd:%p, %d %p, it was"
2504 "discovered on some list?\n",
2505 cmd, cmd->sync_cmd, cmd->scmd);
2506
2507 list_del_init(&cmd->list);
2508 }
2509 defer_index++;
2510 list_add_tail(&cmd->list,
2511 &instance->internal_reset_pending_q);
2512 }
2513 }
2514 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2515}
2516
2517
2518static void
2519process_fw_state_change_wq(struct work_struct *work)
2520{
2521 struct megasas_instance *instance =
2522 container_of(work, struct megasas_instance, work_init);
2523 u32 wait;
2524 unsigned long flags;
2525
2526 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2527 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2528 instance->adprecovery);
2529 return ;
2530 }
2531
2532 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2533 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2534 "state, restarting it...\n");
2535
d46a3ad6 2536 instance->instancet->disable_intr(instance);
39a98554 2537 atomic_set(&instance->fw_outstanding, 0);
2538
2539 atomic_set(&instance->fw_reset_no_pci_access, 1);
2540 instance->instancet->adp_reset(instance, instance->reg_set);
2541 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2542
2543 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2544 "initiating next stage...\n");
2545
2546 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2547 "state 2 starting...\n");
2548
2549 /*waitting for about 20 second before start the second init*/
2550 for (wait = 0; wait < 30; wait++) {
2551 msleep(1000);
2552 }
2553
058a8fac 2554 if (megasas_transition_to_ready(instance, 1)) {
39a98554 2555 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2556
2557 megaraid_sas_kill_hba(instance);
2558 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2559 return ;
2560 }
2561
2562 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2563 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2564 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2565 ) {
2566 *instance->consumer = *instance->producer;
2567 } else {
2568 *instance->consumer = 0;
2569 *instance->producer = 0;
2570 }
2571
2572 megasas_issue_init_mfi(instance);
2573
2574 spin_lock_irqsave(&instance->hba_lock, flags);
2575 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2576 spin_unlock_irqrestore(&instance->hba_lock, flags);
d46a3ad6 2577 instance->instancet->enable_intr(instance);
39a98554 2578
2579 megasas_issue_pending_cmds_again(instance);
2580 instance->issuepend_done = 1;
2581 }
2582 return ;
2583}
2584
c4a3e0a5
BS		 2585/**
2586 * megasas_deplete_reply_queue - Processes all completed commands
2587 * @instance: Adapter soft state
2588 * @alt_status: Alternate status to be returned to
2589 * SCSI mid-layer instead of the status
2590 * returned by the FW
39a98554 2591 * Note: this must be called with hba lock held
c4a3e0a5 2592 */
858119e1 2593static int
39a98554 2594megasas_deplete_reply_queue(struct megasas_instance *instance,
2595 u8 alt_status)
c4a3e0a5 2596{
39a98554 2597 u32 mfiStatus;
2598 u32 fw_state;
2599
2600 if ((mfiStatus = instance->instancet->check_reset(instance,
2601 instance->reg_set)) == 1) {
2602 return IRQ_HANDLED;
2603 }
2604
2605 if ((mfiStatus = instance->instancet->clear_intr(
2606 instance->reg_set)
2607 ) == 0) {
e1419191 2608 /* Hardware may not set outbound_intr_status in MSI-X mode */
c8e858fe 2609 if (!instance->msix_vectors)
e1419191 2610 return IRQ_NONE;
39a98554 2611 }
2612
2613 instance->mfiStatus = mfiStatus;
2614
2615 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2616 fw_state = instance->instancet->read_fw_status_reg(
2617 instance->reg_set) & MFI_STATE_MASK;
2618
2619 if (fw_state != MFI_STATE_FAULT) {
2620 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2621 fw_state);
2622 }
2623
2624 if ((fw_state == MFI_STATE_FAULT) &&
2625 (instance->disableOnlineCtrlReset == 0)) {
2626 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2627
2628 if ((instance->pdev->device ==
2629 PCI_DEVICE_ID_LSI_SAS1064R) ||
2630 (instance->pdev->device ==
2631 PCI_DEVICE_ID_DELL_PERC5) ||
2632 (instance->pdev->device ==
2633 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2634
2635 *instance->consumer =
94cd65dd 2636 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
39a98554 2637 }
2638
2639
d46a3ad6 2640 instance->instancet->disable_intr(instance);
39a98554 2641 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2642 instance->issuepend_done = 0;
2643
2644 atomic_set(&instance->fw_outstanding, 0);
2645 megasas_internal_reset_defer_cmds(instance);
2646
2647 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2648 fw_state, instance->adprecovery);
2649
2650 schedule_work(&instance->work_init);
2651 return IRQ_HANDLED;
2652
2653 } else {
2654 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2655 fw_state, instance->disableOnlineCtrlReset);
2656 }
2657 }
c4a3e0a5 2658
5d018ad0 2659 tasklet_schedule(&instance->isr_tasklet);
c4a3e0a5
BS		 2660 return IRQ_HANDLED;
2661}
c4a3e0a5
BS		 2662/**
2663 * megasas_isr - isr entry point
2664 */
7d12e780 2665static irqreturn_t megasas_isr(int irq, void *devp)
c4a3e0a5 2666{
c8e858fe 2667 struct megasas_irq_context *irq_context = devp;
2668 struct megasas_instance *instance = irq_context->instance;
39a98554 2669 unsigned long flags;
2670 irqreturn_t rc;
2671
c8e858fe 2672 if (atomic_read(&instance->fw_reset_no_pci_access))
39a98554 2673 return IRQ_HANDLED;
2674
39a98554 2675 spin_lock_irqsave(&instance->hba_lock, flags);
2676 rc = megasas_deplete_reply_queue(instance, DID_OK);
2677 spin_unlock_irqrestore(&instance->hba_lock, flags);
2678
2679 return rc;
c4a3e0a5
BS		 2680}
2681
2682/**
2683 * megasas_transition_to_ready - Move the FW to READY state
1341c939 2684 * @instance: Adapter soft state
c4a3e0a5
BS		 2685 *
2686 * During the initialization, FW passes can potentially be in any one of
2687 * several possible states. If the FW in operational, waiting-for-handshake
2688 * states, driver must take steps to bring it to ready state. Otherwise, it
2689 * has to wait for the ready state.
2690 */
9c915a8c 2691int
058a8fac 2692megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
c4a3e0a5
BS		 2693{
2694 int i;
2695 u8 max_wait;
2696 u32 fw_state;
2697 u32 cur_state;
7218df69 2698 u32 abs_state, curr_abs_state;
c4a3e0a5 2699
1341c939 2700 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
c4a3e0a5 2701
e3bbff9f 2702 if (fw_state != MFI_STATE_READY)
0d49016b 2703 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2704 " state\n");
e3bbff9f 2705
c4a3e0a5
BS		 2706 while (fw_state != MFI_STATE_READY) {
2707
7218df69
YB		 2708 abs_state =
2709 instance->instancet->read_fw_status_reg(instance->reg_set);
2710
c4a3e0a5
BS		 2711 switch (fw_state) {
2712
2713 case MFI_STATE_FAULT:
c4a3e0a5 2714 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
058a8fac 2715 if (ocr) {
2716 max_wait = MEGASAS_RESET_WAIT_TIME;
2717 cur_state = MFI_STATE_FAULT;
2718 break;
2719 } else
2720 return -ENODEV;
c4a3e0a5
BS		 2721
2722 case MFI_STATE_WAIT_HANDSHAKE:
2723 /*
2724 * Set the CLR bit in inbound doorbell
2725 */
0c79e681 2726 if ((instance->pdev->device ==
87911122
YB		 2727 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2728 (instance->pdev->device ==
9c915a8c 2729 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2730 (instance->pdev->device ==
21d3c710 2731 PCI_DEVICE_ID_LSI_FUSION) ||
36807e67 2732 (instance->pdev->device ==
21d3c710
SS		 2733 PCI_DEVICE_ID_LSI_INVADER) ||
2734 (instance->pdev->device ==
2735 PCI_DEVICE_ID_LSI_FURY)) {
87911122
YB		 2736 writel(
2737 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
9c915a8c 2738 &instance->reg_set->doorbell);
87911122
YB		 2739 } else {
2740 writel(
2741 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2742 &instance->reg_set->inbound_doorbell);
2743 }
c4a3e0a5 2744
7218df69 2745 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2746 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2747 break;
2748
e3bbff9f 2749 case MFI_STATE_BOOT_MESSAGE_PENDING:
87911122 2750 if ((instance->pdev->device ==
9c915a8c 2751 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2752 (instance->pdev->device ==
2753 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2754 (instance->pdev->device ==
36807e67 2755 PCI_DEVICE_ID_LSI_FUSION) ||
2756 (instance->pdev->device ==
21d3c710
SS		 2757 PCI_DEVICE_ID_LSI_INVADER) ||
2758 (instance->pdev->device ==
2759 PCI_DEVICE_ID_LSI_FURY)) {
87911122 2760 writel(MFI_INIT_HOTPLUG,
9c915a8c 2761 &instance->reg_set->doorbell);
87911122
YB		 2762 } else
2763 writel(MFI_INIT_HOTPLUG,
2764 &instance->reg_set->inbound_doorbell);
e3bbff9f 2765
7218df69 2766 max_wait = MEGASAS_RESET_WAIT_TIME;
e3bbff9f
SP		 2767 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2768 break;
2769
c4a3e0a5
BS		 2770 case MFI_STATE_OPERATIONAL:
2771 /*
e3bbff9f 2772 * Bring it to READY state; assuming max wait 10 secs
c4a3e0a5 2773 */
d46a3ad6 2774 instance->instancet->disable_intr(instance);
87911122
YB		 2775 if ((instance->pdev->device ==
2776 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2777 (instance->pdev->device ==
9c915a8c 2778 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2779 (instance->pdev->device
36807e67 2780 == PCI_DEVICE_ID_LSI_FUSION) ||
2781 (instance->pdev->device
21d3c710
SS		 2782 == PCI_DEVICE_ID_LSI_INVADER) ||
2783 (instance->pdev->device
2784 == PCI_DEVICE_ID_LSI_FURY)) {
87911122 2785 writel(MFI_RESET_FLAGS,
9c915a8c 2786 &instance->reg_set->doorbell);
36807e67 2787 if ((instance->pdev->device ==
21d3c710
SS		 2788 PCI_DEVICE_ID_LSI_FUSION) ||
2789 (instance->pdev->device ==
2790 PCI_DEVICE_ID_LSI_INVADER) ||
2791 (instance->pdev->device ==
2792 PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 2793 for (i = 0; i < (10 * 1000); i += 20) {
2794 if (readl(
2795 &instance->
2796 reg_set->
2797 doorbell) & 1)
2798 msleep(20);
2799 else
2800 break;
2801 }
2802 }
87911122
YB		 2803 } else
2804 writel(MFI_RESET_FLAGS,
2805 &instance->reg_set->inbound_doorbell);
c4a3e0a5 2806
7218df69 2807 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2808 cur_state = MFI_STATE_OPERATIONAL;
2809 break;
2810
2811 case MFI_STATE_UNDEFINED:
2812 /*
2813 * This state should not last for more than 2 seconds
2814 */
7218df69 2815 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2816 cur_state = MFI_STATE_UNDEFINED;
2817 break;
2818
2819 case MFI_STATE_BB_INIT:
7218df69 2820 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2821 cur_state = MFI_STATE_BB_INIT;
2822 break;
2823
2824 case MFI_STATE_FW_INIT:
7218df69 2825 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2826 cur_state = MFI_STATE_FW_INIT;
2827 break;
2828
2829 case MFI_STATE_FW_INIT_2:
7218df69 2830 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2831 cur_state = MFI_STATE_FW_INIT_2;
2832 break;
2833
2834 case MFI_STATE_DEVICE_SCAN:
7218df69 2835 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2836 cur_state = MFI_STATE_DEVICE_SCAN;
2837 break;
2838
2839 case MFI_STATE_FLUSH_CACHE:
7218df69 2840 max_wait = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 2841 cur_state = MFI_STATE_FLUSH_CACHE;
2842 break;
2843
2844 default:
2845 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2846 fw_state);
2847 return -ENODEV;
2848 }
2849
2850 /*
2851 * The cur_state should not last for more than max_wait secs
2852 */
2853 for (i = 0; i < (max_wait * 1000); i++) {
0d49016b 2854 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
1341c939 2855 MFI_STATE_MASK ;
7218df69
YB		 2856 curr_abs_state =
2857 instance->instancet->read_fw_status_reg(instance->reg_set);
c4a3e0a5 2858
7218df69 2859 if (abs_state == curr_abs_state) {
c4a3e0a5
BS		 2860 msleep(1);
2861 } else
2862 break;
2863 }
2864
2865 /*
2866 * Return error if fw_state hasn't changed after max_wait
2867 */
7218df69 2868 if (curr_abs_state == abs_state) {
c4a3e0a5
BS		 2869 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2870 "in %d secs\n", fw_state, max_wait);
2871 return -ENODEV;
2872 }
39a98554 2873 }
0d49016b 2874 printk(KERN_INFO "megasas: FW now in Ready state\n");
c4a3e0a5
BS		 2875
2876 return 0;
2877}
2878
2879/**
2880 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2881 * @instance: Adapter soft state
2882 */
2883static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2884{
2885 int i;
9c915a8c 2886 u32 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 2887 struct megasas_cmd *cmd;
2888
2889 if (!instance->frame_dma_pool)
2890 return;
2891
2892 /*
2893 * Return all frames to pool
2894 */
2895 for (i = 0; i < max_cmd; i++) {
2896
2897 cmd = instance->cmd_list[i];
2898
2899 if (cmd->frame)
2900 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2901 cmd->frame_phys_addr);
2902
2903 if (cmd->sense)
e3bbff9f 2904 pci_pool_free(instance->sense_dma_pool, cmd->sense,
c4a3e0a5
BS		 2905 cmd->sense_phys_addr);
2906 }
2907
2908 /*
2909 * Now destroy the pool itself
2910 */
2911 pci_pool_destroy(instance->frame_dma_pool);
2912 pci_pool_destroy(instance->sense_dma_pool);
2913
2914 instance->frame_dma_pool = NULL;
2915 instance->sense_dma_pool = NULL;
2916}
2917
2918/**
2919 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2920 * @instance: Adapter soft state
2921 *
2922 * Each command packet has an embedded DMA memory buffer that is used for
2923 * filling MFI frame and the SG list that immediately follows the frame. This
2924 * function creates those DMA memory buffers for each command packet by using
2925 * PCI pool facility.
2926 */
2927static int megasas_create_frame_pool(struct megasas_instance *instance)
2928{
2929 int i;
2930 u32 max_cmd;
2931 u32 sge_sz;
2932 u32 sgl_sz;
2933 u32 total_sz;
2934 u32 frame_count;
2935 struct megasas_cmd *cmd;
2936
9c915a8c 2937 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 2938
2939 /*
2940 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2941 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2942 */
2943 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2944 sizeof(struct megasas_sge32);
2945
f4c9a131
YB		 2946 if (instance->flag_ieee) {
2947 sge_sz = sizeof(struct megasas_sge_skinny);
2948 }
2949
c4a3e0a5
BS		 2950 /*
2951 * Calculated the number of 64byte frames required for SGL
2952 */
2953 sgl_sz = sge_sz * instance->max_num_sge;
2954 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
39a98554 2955 frame_count = 15;
c4a3e0a5
BS		 2956
2957 /*
2958 * We need one extra frame for the MFI command
2959 */
2960 frame_count++;
2961
2962 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2963 /*
2964 * Use DMA pool facility provided by PCI layer
2965 */
2966 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2967 instance->pdev, total_sz, 64,
2968 0);
2969
2970 if (!instance->frame_dma_pool) {
2971 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2972 return -ENOMEM;
2973 }
2974
2975 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2976 instance->pdev, 128, 4, 0);
2977
2978 if (!instance->sense_dma_pool) {
2979 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2980
2981 pci_pool_destroy(instance->frame_dma_pool);
2982 instance->frame_dma_pool = NULL;
2983
2984 return -ENOMEM;
2985 }
2986
2987 /*
2988 * Allocate and attach a frame to each of the commands in cmd_list.
2989 * By making cmd->index as the context instead of the &cmd, we can
2990 * always use 32bit context regardless of the architecture
2991 */
2992 for (i = 0; i < max_cmd; i++) {
2993
2994 cmd = instance->cmd_list[i];
2995
2996 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2997 GFP_KERNEL, &cmd->frame_phys_addr);
2998
2999 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3000 GFP_KERNEL, &cmd->sense_phys_addr);
3001
3002 /*
3003 * megasas_teardown_frame_pool() takes care of freeing
3004 * whatever has been allocated
3005 */
3006 if (!cmd->frame || !cmd->sense) {
3007 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3008 megasas_teardown_frame_pool(instance);
3009 return -ENOMEM;
3010 }
3011
707e09bd 3012 memset(cmd->frame, 0, total_sz);
94cd65dd 3013 cmd->frame->io.context = cpu_to_le32(cmd->index);
7e8a75f4 3014 cmd->frame->io.pad_0 = 0;
e5f93a36 3015 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
3016 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
21d3c710 3017 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
e5f93a36 3018 (reset_devices))
3019 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
c4a3e0a5
BS		 3020 }
3021
3022 return 0;
3023}
3024
3025/**
3026 * megasas_free_cmds - Free all the cmds in the free cmd pool
3027 * @instance: Adapter soft state
3028 */
9c915a8c 3029void megasas_free_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 3030{
3031 int i;
3032 /* First free the MFI frame pool */
3033 megasas_teardown_frame_pool(instance);
3034
3035 /* Free all the commands in the cmd_list */
9c915a8c 3036 for (i = 0; i < instance->max_mfi_cmds; i++)
3037
c4a3e0a5
BS		 3038 kfree(instance->cmd_list[i]);
3039
3040 /* Free the cmd_list buffer itself */
3041 kfree(instance->cmd_list);
3042 instance->cmd_list = NULL;
3043
3044 INIT_LIST_HEAD(&instance->cmd_pool);
3045}
3046
3047/**
3048 * megasas_alloc_cmds - Allocates the command packets
3049 * @instance: Adapter soft state
3050 *
3051 * Each command that is issued to the FW, whether IO commands from the OS or
3052 * internal commands like IOCTLs, are wrapped in local data structure called
3053 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3054 * the FW.
3055 *
3056 * Each frame has a 32-bit field called context (tag). This context is used
3057 * to get back the megasas_cmd from the frame when a frame gets completed in
3058 * the ISR. Typically the address of the megasas_cmd itself would be used as
3059 * the context. But we wanted to keep the differences between 32 and 64 bit
3060 * systems to the mininum. We always use 32 bit integers for the context. In
3061 * this driver, the 32 bit values are the indices into an array cmd_list.
3062 * This array is used only to look up the megasas_cmd given the context. The
3063 * free commands themselves are maintained in a linked list called cmd_pool.
3064 */
9c915a8c 3065int megasas_alloc_cmds(struct megasas_instance *instance)
c4a3e0a5
BS		 3066{
3067 int i;
3068 int j;
3069 u32 max_cmd;
3070 struct megasas_cmd *cmd;
3071
9c915a8c 3072 max_cmd = instance->max_mfi_cmds;
c4a3e0a5
BS		 3073
3074 /*
3075 * instance->cmd_list is an array of struct megasas_cmd pointers.
3076 * Allocate the dynamic array first and then allocate individual
3077 * commands.
3078 */
dd00cc48 3079 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
c4a3e0a5
BS		 3080
3081 if (!instance->cmd_list) {
3082 printk(KERN_DEBUG "megasas: out of memory\n");
3083 return -ENOMEM;
3084 }
3085
9c915a8c 3086 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
c4a3e0a5
BS		 3087
3088 for (i = 0; i < max_cmd; i++) {
3089 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3090 GFP_KERNEL);
3091
3092 if (!instance->cmd_list[i]) {
3093
3094 for (j = 0; j < i; j++)
3095 kfree(instance->cmd_list[j]);
3096
3097 kfree(instance->cmd_list);
3098 instance->cmd_list = NULL;
3099
3100 return -ENOMEM;
3101 }
3102 }
3103
3104 /*
3105 * Add all the commands to command pool (instance->cmd_pool)
3106 */
3107 for (i = 0; i < max_cmd; i++) {
3108 cmd = instance->cmd_list[i];
3109 memset(cmd, 0, sizeof(struct megasas_cmd));
3110 cmd->index = i;
39a98554 3111 cmd->scmd = NULL;
c4a3e0a5
BS		 3112 cmd->instance = instance;
3113
3114 list_add_tail(&cmd->list, &instance->cmd_pool);
3115 }
3116
3117 /*
3118 * Create a frame pool and assign one frame to each cmd
3119 */
3120 if (megasas_create_frame_pool(instance)) {
3121 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3122 megasas_free_cmds(instance);
3123 }
3124
3125 return 0;
3126}
3127
81e403ce
YB		 3128/*
3129 * megasas_get_pd_list_info - Returns FW's pd_list structure
3130 * @instance: Adapter soft state
3131 * @pd_list: pd_list structure
3132 *
3133 * Issues an internal command (DCMD) to get the FW's controller PD
3134 * list structure. This information is mainly used to find out SYSTEM
3135 * supported by the FW.
3136 */
3137static int
3138megasas_get_pd_list(struct megasas_instance *instance)
3139{
3140 int ret = 0, pd_index = 0;
3141 struct megasas_cmd *cmd;
3142 struct megasas_dcmd_frame *dcmd;
3143 struct MR_PD_LIST *ci;
3144 struct MR_PD_ADDRESS *pd_addr;
3145 dma_addr_t ci_h = 0;
3146
3147 cmd = megasas_get_cmd(instance);
3148
3149 if (!cmd) {
3150 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3151 return -ENOMEM;
3152 }
3153
3154 dcmd = &cmd->frame->dcmd;
3155
3156 ci = pci_alloc_consistent(instance->pdev,
3157 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3158
3159 if (!ci) {
3160 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3161 megasas_return_cmd(instance, cmd);
3162 return -ENOMEM;
3163 }
3164
3165 memset(ci, 0, sizeof(*ci));
3166 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3167
3168 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3169 dcmd->mbox.b[1] = 0;
3170 dcmd->cmd = MFI_CMD_DCMD;
3171 dcmd->cmd_status = 0xFF;
3172 dcmd->sge_count = 1;
94cd65dd 3173 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
81e403ce 3174 dcmd->timeout = 0;
780a3762 3175 dcmd->pad_0 = 0;
94cd65dd
SS		 3176 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3177 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3178 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3179 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
81e403ce
YB		 3180
3181 if (!megasas_issue_polled(instance, cmd)) {
3182 ret = 0;
3183 } else {
3184 ret = -1;
3185 }
3186
3187 /*
3188 * the following function will get the instance PD LIST.
3189 */
3190
3191 pd_addr = ci->addr;
3192
3193 if ( ret == 0 &&
94cd65dd 3194 (le32_to_cpu(ci->count) <
81e403ce
YB		 3195 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3196
3197 memset(instance->pd_list, 0,
3198 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3199
94cd65dd 3200 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
81e403ce
YB		 3201
3202 instance->pd_list[pd_addr->deviceId].tid =
94cd65dd 3203 le16_to_cpu(pd_addr->deviceId);
81e403ce
YB		 3204 instance->pd_list[pd_addr->deviceId].driveType =
3205 pd_addr->scsiDevType;
3206 instance->pd_list[pd_addr->deviceId].driveState =
3207 MR_PD_STATE_SYSTEM;
3208 pd_addr++;
3209 }
3210 }
3211
3212 pci_free_consistent(instance->pdev,
3213 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3214 ci, ci_h);
3215 megasas_return_cmd(instance, cmd);
3216
3217 return ret;
3218}
3219
bdc6fb8d
YB		 3220/*
3221 * megasas_get_ld_list_info - Returns FW's ld_list structure
3222 * @instance: Adapter soft state
3223 * @ld_list: ld_list structure
3224 *
3225 * Issues an internal command (DCMD) to get the FW's controller PD
3226 * list structure. This information is mainly used to find out SYSTEM
3227 * supported by the FW.
3228 */
3229static int
3230megasas_get_ld_list(struct megasas_instance *instance)
3231{
3232 int ret = 0, ld_index = 0, ids = 0;
3233 struct megasas_cmd *cmd;
3234 struct megasas_dcmd_frame *dcmd;
3235 struct MR_LD_LIST *ci;
3236 dma_addr_t ci_h = 0;
94cd65dd 3237 u32 ld_count;
bdc6fb8d
YB		 3238
3239 cmd = megasas_get_cmd(instance);
3240
3241 if (!cmd) {
3242 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3243 return -ENOMEM;
3244 }
3245
3246 dcmd = &cmd->frame->dcmd;
3247
3248 ci = pci_alloc_consistent(instance->pdev,
3249 sizeof(struct MR_LD_LIST),
3250 &ci_h);
3251
3252 if (!ci) {
3253 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3254 megasas_return_cmd(instance, cmd);
3255 return -ENOMEM;
3256 }
3257
3258 memset(ci, 0, sizeof(*ci));
3259 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3260
3261 dcmd->cmd = MFI_CMD_DCMD;
3262 dcmd->cmd_status = 0xFF;
3263 dcmd->sge_count = 1;
94cd65dd 3264 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
bdc6fb8d 3265 dcmd->timeout = 0;
94cd65dd
SS		 3266 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3267 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3268 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3269 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
bdc6fb8d
YB		 3270 dcmd->pad_0 = 0;
3271
3272 if (!megasas_issue_polled(instance, cmd)) {
3273 ret = 0;
3274 } else {
3275 ret = -1;
3276 }
3277
94cd65dd
SS		 3278 ld_count = le32_to_cpu(ci->ldCount);
3279
bdc6fb8d
YB		 3280 /* the following function will get the instance PD LIST */
3281
94cd65dd 3282 if ((ret == 0) && (ld_count <= MAX_LOGICAL_DRIVES)) {
bdc6fb8d
YB		 3283 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3284
94cd65dd 3285 for (ld_index = 0; ld_index < ld_count; ld_index++) {
bdc6fb8d
YB		 3286 if (ci->ldList[ld_index].state != 0) {
3287 ids = ci->ldList[ld_index].ref.targetId;
3288 instance->ld_ids[ids] =
3289 ci->ldList[ld_index].ref.targetId;
3290 }
3291 }
3292 }
3293
3294 pci_free_consistent(instance->pdev,
3295 sizeof(struct MR_LD_LIST),
3296 ci,
3297 ci_h);
3298
3299 megasas_return_cmd(instance, cmd);
3300 return ret;
3301}
3302
21c9e160 3303/**
3304 * megasas_ld_list_query - Returns FW's ld_list structure
3305 * @instance: Adapter soft state
3306 * @ld_list: ld_list structure
3307 *
3308 * Issues an internal command (DCMD) to get the FW's controller PD
3309 * list structure. This information is mainly used to find out SYSTEM
3310 * supported by the FW.
3311 */
3312static int
3313megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3314{
3315 int ret = 0, ld_index = 0, ids = 0;
3316 struct megasas_cmd *cmd;
3317 struct megasas_dcmd_frame *dcmd;
3318 struct MR_LD_TARGETID_LIST *ci;
3319 dma_addr_t ci_h = 0;
94cd65dd 3320 u32 tgtid_count;
21c9e160 3321
3322 cmd = megasas_get_cmd(instance);
3323
3324 if (!cmd) {
3325 printk(KERN_WARNING
3326 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
3327 return -ENOMEM;
3328 }
3329
3330 dcmd = &cmd->frame->dcmd;
3331
3332 ci = pci_alloc_consistent(instance->pdev,
3333 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
3334
3335 if (!ci) {
3336 printk(KERN_WARNING
3337 "megasas: Failed to alloc mem for ld_list_query\n");
3338 megasas_return_cmd(instance, cmd);
3339 return -ENOMEM;
3340 }
3341
3342 memset(ci, 0, sizeof(*ci));
3343 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3344
3345 dcmd->mbox.b[0] = query_type;
3346
3347 dcmd->cmd = MFI_CMD_DCMD;
3348 dcmd->cmd_status = 0xFF;
3349 dcmd->sge_count = 1;
94cd65dd 3350 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
21c9e160 3351 dcmd->timeout = 0;
94cd65dd
SS		 3352 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3353 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
3354 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3355 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
21c9e160 3356 dcmd->pad_0 = 0;
3357
3358 if (!megasas_issue_polled(instance, cmd) && !dcmd->cmd_status) {
3359 ret = 0;
3360 } else {
3361 /* On failure, call older LD list DCMD */
3362 ret = 1;
3363 }
3364
94cd65dd
SS		 3365 tgtid_count = le32_to_cpu(ci->count);
3366
3367 if ((ret == 0) && (tgtid_count <= (MAX_LOGICAL_DRIVES))) {
21c9e160 3368 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
94cd65dd 3369 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
21c9e160 3370 ids = ci->targetId[ld_index];
3371 instance->ld_ids[ids] = ci->targetId[ld_index];
3372 }
3373
3374 }
3375
3376 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
3377 ci, ci_h);
3378
3379 megasas_return_cmd(instance, cmd);
3380
3381 return ret;
3382}
3383
c4a3e0a5
BS		 3384/**
3385 * megasas_get_controller_info - Returns FW's controller structure
3386 * @instance: Adapter soft state
3387 * @ctrl_info: Controller information structure
3388 *
3389 * Issues an internal command (DCMD) to get the FW's controller structure.
3390 * This information is mainly used to find out the maximum IO transfer per
3391 * command supported by the FW.
3392 */
3393static int
3394megasas_get_ctrl_info(struct megasas_instance *instance,
3395 struct megasas_ctrl_info *ctrl_info)
3396{
3397 int ret = 0;
3398 struct megasas_cmd *cmd;
3399 struct megasas_dcmd_frame *dcmd;
3400 struct megasas_ctrl_info *ci;
3401 dma_addr_t ci_h = 0;
3402
3403 cmd = megasas_get_cmd(instance);
3404
3405 if (!cmd) {
3406 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3407 return -ENOMEM;
3408 }
3409
3410 dcmd = &cmd->frame->dcmd;
3411
3412 ci = pci_alloc_consistent(instance->pdev,
3413 sizeof(struct megasas_ctrl_info), &ci_h);
3414
3415 if (!ci) {
3416 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3417 megasas_return_cmd(instance, cmd);
3418 return -ENOMEM;
3419 }
3420
3421 memset(ci, 0, sizeof(*ci));
3422 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3423
3424 dcmd->cmd = MFI_CMD_DCMD;
3425 dcmd->cmd_status = 0xFF;
3426 dcmd->sge_count = 1;
94cd65dd 3427 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 3428 dcmd->timeout = 0;
780a3762 3429 dcmd->pad_0 = 0;
94cd65dd
SS		 3430 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
3431 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
3432 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3433 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
c4a3e0a5
BS		 3434
3435 if (!megasas_issue_polled(instance, cmd)) {
3436 ret = 0;
3437 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3438 } else {
3439 ret = -1;
3440 }
3441
3442 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3443 ci, ci_h);
3444
3445 megasas_return_cmd(instance, cmd);
3446 return ret;
3447}
3448
31ea7088 3449/**
3450 * megasas_issue_init_mfi - Initializes the FW
3451 * @instance: Adapter soft state
3452 *
3453 * Issues the INIT MFI cmd
3454 */
3455static int
3456megasas_issue_init_mfi(struct megasas_instance *instance)
3457{
3458 u32 context;
3459
3460 struct megasas_cmd *cmd;
3461
3462 struct megasas_init_frame *init_frame;
3463 struct megasas_init_queue_info *initq_info;
3464 dma_addr_t init_frame_h;
3465 dma_addr_t initq_info_h;
3466
3467 /*
3468 * Prepare a init frame. Note the init frame points to queue info
3469 * structure. Each frame has SGL allocated after first 64 bytes. For
3470 * this frame - since we don't need any SGL - we use SGL's space as
3471 * queue info structure
3472 *
3473 * We will not get a NULL command below. We just created the pool.
3474 */
3475 cmd = megasas_get_cmd(instance);
3476
3477 init_frame = (struct megasas_init_frame *)cmd->frame;
3478 initq_info = (struct megasas_init_queue_info *)
3479 ((unsigned long)init_frame + 64);
3480
3481 init_frame_h = cmd->frame_phys_addr;
3482 initq_info_h = init_frame_h + 64;
3483
3484 context = init_frame->context;
3485 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3486 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3487 init_frame->context = context;
3488
94cd65dd
SS		 3489 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
3490 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
31ea7088 3491
94cd65dd
SS		 3492 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
3493 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
31ea7088 3494
3495 init_frame->cmd = MFI_CMD_INIT;
3496 init_frame->cmd_status = 0xFF;
94cd65dd
SS		 3497 init_frame->queue_info_new_phys_addr_lo =
3498 cpu_to_le32(lower_32_bits(initq_info_h));
3499 init_frame->queue_info_new_phys_addr_hi =
3500 cpu_to_le32(upper_32_bits(initq_info_h));
31ea7088 3501
94cd65dd 3502 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
31ea7088 3503
3504 /*
3505 * disable the intr before firing the init frame to FW
3506 */
d46a3ad6 3507 instance->instancet->disable_intr(instance);
31ea7088 3508
3509 /*
3510 * Issue the init frame in polled mode
3511 */
3512
3513 if (megasas_issue_polled(instance, cmd)) {
3514 printk(KERN_ERR "megasas: Failed to init firmware\n");
3515 megasas_return_cmd(instance, cmd);
3516 goto fail_fw_init;
3517 }
3518
3519 megasas_return_cmd(instance, cmd);
3520
3521 return 0;
3522
3523fail_fw_init:
3524 return -EINVAL;
3525}
3526
cd50ba8e 3527static u32
3528megasas_init_adapter_mfi(struct megasas_instance *instance)
c4a3e0a5 3529{
cd50ba8e 3530 struct megasas_register_set __iomem *reg_set;
c4a3e0a5
BS		 3531 u32 context_sz;
3532 u32 reply_q_sz;
c4a3e0a5
BS		 3533
3534 reg_set = instance->reg_set;
3535
c4a3e0a5
BS		 3536 /*
3537 * Get various operational parameters from status register
3538 */
1341c939 3539 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
e3bbff9f
SP		 3540 /*
3541 * Reduce the max supported cmds by 1. This is to ensure that the
3542 * reply_q_sz (1 more than the max cmd that driver may send)
3543 * does not exceed max cmds that the FW can support
3544 */
3545 instance->max_fw_cmds = instance->max_fw_cmds-1;
9c915a8c 3546 instance->max_mfi_cmds = instance->max_fw_cmds;
0d49016b 3547 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
1341c939 3548 0x10;
c4a3e0a5
BS		 3549 /*
3550 * Create a pool of commands
3551 */
3552 if (megasas_alloc_cmds(instance))
3553 goto fail_alloc_cmds;
3554
3555 /*
3556 * Allocate memory for reply queue. Length of reply queue should
3557 * be _one_ more than the maximum commands handled by the firmware.
3558 *
3559 * Note: When FW completes commands, it places corresponding contex
3560 * values in this circular reply queue. This circular queue is a fairly
3561 * typical producer-consumer queue. FW is the producer (of completed
3562 * commands) and the driver is the consumer.
3563 */
3564 context_sz = sizeof(u32);
3565 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3566
3567 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3568 reply_q_sz,
3569 &instance->reply_queue_h);
3570
3571 if (!instance->reply_queue) {
3572 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3573 goto fail_reply_queue;
3574 }
3575
31ea7088 3576 if (megasas_issue_init_mfi(instance))
c4a3e0a5 3577 goto fail_fw_init;
c4a3e0a5 3578
39a98554 3579 instance->fw_support_ieee = 0;
3580 instance->fw_support_ieee =
3581 (instance->instancet->read_fw_status_reg(reg_set) &
3582 0x04000000);
3583
3584 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3585 instance->fw_support_ieee);
3586
3587 if (instance->fw_support_ieee)
3588 instance->flag_ieee = 1;
3589
cd50ba8e 3590 return 0;
3591
3592fail_fw_init:
3593
3594 pci_free_consistent(instance->pdev, reply_q_sz,
3595 instance->reply_queue, instance->reply_queue_h);
3596fail_reply_queue:
3597 megasas_free_cmds(instance);
3598
3599fail_alloc_cmds:
cd50ba8e 3600 return 1;
3601}
3602
3603/**
3604 * megasas_init_fw - Initializes the FW
3605 * @instance: Adapter soft state
3606 *
3607 * This is the main function for initializing firmware
3608 */
3609
3610static int megasas_init_fw(struct megasas_instance *instance)
3611{
3612 u32 max_sectors_1;
3613 u32 max_sectors_2;
d46a3ad6 3614 u32 tmp_sectors, msix_enable, scratch_pad_2;
cd50ba8e 3615 struct megasas_register_set __iomem *reg_set;
3616 struct megasas_ctrl_info *ctrl_info;
3617 unsigned long bar_list;
d46a3ad6 3618 int i, loop, fw_msix_count = 0;
cd50ba8e 3619
3620 /* Find first memory bar */
3621 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3622 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
3623 instance->base_addr = pci_resource_start(instance->pdev, instance->bar);
3624 if (pci_request_selected_regions(instance->pdev, instance->bar,
3625 "megasas: LSI")) {
3626 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3627 return -EBUSY;
3628 }
3629
3630 instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
3631
3632 if (!instance->reg_set) {
3633 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3634 goto fail_ioremap;
3635 }
3636
3637 reg_set = instance->reg_set;
3638
3639 switch (instance->pdev->device) {
9c915a8c 3640 case PCI_DEVICE_ID_LSI_FUSION:
36807e67 3641 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 3642 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 3643 instance->instancet = &megasas_instance_template_fusion;
3644 break;
cd50ba8e 3645 case PCI_DEVICE_ID_LSI_SAS1078R:
3646 case PCI_DEVICE_ID_LSI_SAS1078DE:
3647 instance->instancet = &megasas_instance_template_ppc;
3648 break;
3649 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3650 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3651 instance->instancet = &megasas_instance_template_gen2;
3652 break;
3653 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3654 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3655 instance->instancet = &megasas_instance_template_skinny;
3656 break;
3657 case PCI_DEVICE_ID_LSI_SAS1064R:
3658 case PCI_DEVICE_ID_DELL_PERC5:
3659 default:
3660 instance->instancet = &megasas_instance_template_xscale;
3661 break;
3662 }
3663
6431f5d7
SS		 3664 if (megasas_transition_to_ready(instance, 0)) {
3665 atomic_set(&instance->fw_reset_no_pci_access, 1);
3666 instance->instancet->adp_reset
3667 (instance, instance->reg_set);
3668 atomic_set(&instance->fw_reset_no_pci_access, 0);
3669 dev_info(&instance->pdev->dev,
3670 "megasas: FW restarted successfully from %s!\n",
3671 __func__);
3672
3673 /*waitting for about 30 second before retry*/
3674 ssleep(30);
3675
3676 if (megasas_transition_to_ready(instance, 0))
3677 goto fail_ready_state;
3678 }
cd50ba8e 3679
d46a3ad6
SS		 3680 /*
3681 * MSI-X host index 0 is common for all adapter.
3682 * It is used for all MPT based Adapters.
3683 */
3684 instance->reply_post_host_index_addr[0] =
3685 (u32 *)((u8 *)instance->reg_set +
3686 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
3687
3f1abce4 3688 /* Check if MSI-X is supported while in ready state */
3689 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
3690 0x4000000) >> 0x1a;
c8e858fe 3691 if (msix_enable && !msix_disable) {
d46a3ad6
SS		 3692 scratch_pad_2 = readl
3693 (&instance->reg_set->outbound_scratch_pad_2);
c8e858fe 3694 /* Check max MSI-X vectors */
d46a3ad6
SS		 3695 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) {
3696 instance->msix_vectors = (scratch_pad_2
3697 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
3698 fw_msix_count = instance->msix_vectors;
079eaddf 3699 if (msix_vectors)
3700 instance->msix_vectors =
3701 min(msix_vectors,
3702 instance->msix_vectors);
d46a3ad6
SS		 3703 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
3704 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
3705 /* Invader/Fury supports more than 8 MSI-X */
3706 instance->msix_vectors = ((scratch_pad_2
3707 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
3708 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
3709 fw_msix_count = instance->msix_vectors;
3710 /* Save 1-15 reply post index address to local memory
3711 * Index 0 is already saved from reg offset
3712 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
3713 */
3714 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
3715 instance->reply_post_host_index_addr[loop] =
3716 (u32 *)((u8 *)instance->reg_set +
3717 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
3718 + (loop * 0x10));
3719 }
3720 if (msix_vectors)
3721 instance->msix_vectors = min(msix_vectors,
3722 instance->msix_vectors);
c8e858fe 3723 } else
3724 instance->msix_vectors = 1;
3725 /* Don't bother allocating more MSI-X vectors than cpus */
3726 instance->msix_vectors = min(instance->msix_vectors,
3727 (unsigned int)num_online_cpus());
3728 for (i = 0; i < instance->msix_vectors; i++)
3729 instance->msixentry[i].entry = i;
3730 i = pci_enable_msix(instance->pdev, instance->msixentry,
3731 instance->msix_vectors);
3732 if (i >= 0) {
3733 if (i) {
3734 if (!pci_enable_msix(instance->pdev,
3735 instance->msixentry, i))
3736 instance->msix_vectors = i;
3737 else
3738 instance->msix_vectors = 0;
3739 }
3740 } else
3741 instance->msix_vectors = 0;
d46a3ad6
SS		 3742
3743 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
3744 "<%d> MSIX vector,Online CPUs: <%d>,"
3745 "Current MSIX <%d>\n", instance->host->host_no,
3746 fw_msix_count, (unsigned int)num_online_cpus(),
3747 instance->msix_vectors);
c8e858fe 3748 }
3f1abce4 3749
cd50ba8e 3750 /* Get operational params, sge flags, send init cmd to controller */
3751 if (instance->instancet->init_adapter(instance))
eb1b1237 3752 goto fail_init_adapter;
cd50ba8e 3753
3754 printk(KERN_ERR "megasas: INIT adapter done\n");
3755
39a98554 3756 /** for passthrough
3757 * the following function will get the PD LIST.
3758 */
3759
81e403ce
YB		 3760 memset(instance->pd_list, 0 ,
3761 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3762 megasas_get_pd_list(instance);
3763
bdc6fb8d 3764 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
21c9e160 3765 if (megasas_ld_list_query(instance,
3766 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
3767 megasas_get_ld_list(instance);
bdc6fb8d 3768
c4a3e0a5
BS		 3769 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3770
3771 /*
3772 * Compute the max allowed sectors per IO: The controller info has two
3773 * limits on max sectors. Driver should use the minimum of these two.
3774 *
3775 * 1 << stripe_sz_ops.min = max sectors per strip
3776 *
3777 * Note that older firmwares ( < FW ver 30) didn't report information
3778 * to calculate max_sectors_1. So the number ended up as zero always.
3779 */
14faea9f 3780 tmp_sectors = 0;
c4a3e0a5
BS		 3781 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3782
3783 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
94cd65dd
SS		 3784 le16_to_cpu(ctrl_info->max_strips_per_io);
3785 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
c4a3e0a5 3786
14faea9f 3787 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
404a8a1a
SS		 3788
3789 /*Check whether controller is iMR or MR */
3790 if (ctrl_info->memory_size) {
3791 instance->is_imr = 0;
3792 dev_info(&instance->pdev->dev, "Controller type: MR,"
3793 "Memory size is: %dMB\n",
94cd65dd 3794 le16_to_cpu(ctrl_info->memory_size));
404a8a1a
SS		 3795 } else {
3796 instance->is_imr = 1;
3797 dev_info(&instance->pdev->dev,
3798 "Controller type: iMR\n");
3799 }
94cd65dd
SS		 3800 /* OnOffProperties are converted into CPU arch*/
3801 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
39a98554 3802 instance->disableOnlineCtrlReset =
3803 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
94cd65dd
SS		 3804 /* adapterOperations2 are converted into CPU arch*/
3805 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
bc93d425
SS		 3806 instance->UnevenSpanSupport =
3807 ctrl_info->adapterOperations2.supportUnevenSpans;
3808 if (instance->UnevenSpanSupport) {
3809 struct fusion_context *fusion = instance->ctrl_context;
3810 dev_info(&instance->pdev->dev, "FW supports: "
3811 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
3812 if (MR_ValidateMapInfo(instance))
3813 fusion->fast_path_io = 1;
3814 else
3815 fusion->fast_path_io = 0;
3816
3817 }
14faea9f 3818 }
14faea9f 3819 instance->max_sectors_per_req = instance->max_num_sge *
3820 PAGE_SIZE / 512;
3821 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3822 instance->max_sectors_per_req = tmp_sectors;
c4a3e0a5
BS		 3823
3824 kfree(ctrl_info);
3825
c5daa6a9 3826 /* Check for valid throttlequeuedepth module parameter */
404a8a1a 3827 if (instance->is_imr) {
c5daa6a9 3828 if (throttlequeuedepth > (instance->max_fw_cmds -
3829 MEGASAS_SKINNY_INT_CMDS))
3830 instance->throttlequeuedepth =
3831 MEGASAS_THROTTLE_QUEUE_DEPTH;
3832 else
3833 instance->throttlequeuedepth = throttlequeuedepth;
3834 } else {
3835 if (throttlequeuedepth > (instance->max_fw_cmds -
3836 MEGASAS_INT_CMDS))
3837 instance->throttlequeuedepth =
3838 MEGASAS_THROTTLE_QUEUE_DEPTH;
3839 else
3840 instance->throttlequeuedepth = throttlequeuedepth;
3841 }
3842
5d018ad0
SP		 3843 /*
3844 * Setup tasklet for cmd completion
3845 */
3846
f86c5424 3847 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
ad84db2e 3848 (unsigned long)instance);
3849
c4a3e0a5
BS		 3850 return 0;
3851
eb1b1237 3852fail_init_adapter:
cd50ba8e 3853fail_ready_state:
c4a3e0a5
BS		 3854 iounmap(instance->reg_set);
3855
3856 fail_ioremap:
b6d5d880 3857 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 3858
3859 return -EINVAL;
3860}
3861
3862/**
3863 * megasas_release_mfi - Reverses the FW initialization
3864 * @intance: Adapter soft state
3865 */
3866static void megasas_release_mfi(struct megasas_instance *instance)
3867{
9c915a8c 3868 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
c4a3e0a5 3869
9c915a8c 3870 if (instance->reply_queue)
3871 pci_free_consistent(instance->pdev, reply_q_sz,
c4a3e0a5
BS		 3872 instance->reply_queue, instance->reply_queue_h);
3873
3874 megasas_free_cmds(instance);
3875
3876 iounmap(instance->reg_set);
3877
b6d5d880 3878 pci_release_selected_regions(instance->pdev, instance->bar);
c4a3e0a5
BS		 3879}
3880
3881/**
3882 * megasas_get_seq_num - Gets latest event sequence numbers
3883 * @instance: Adapter soft state
3884 * @eli: FW event log sequence numbers information
3885 *
3886 * FW maintains a log of all events in a non-volatile area. Upper layers would
3887 * usually find out the latest sequence number of the events, the seq number at
3888 * the boot etc. They would "read" all the events below the latest seq number
3889 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3890 * number), they would subsribe to AEN (asynchronous event notification) and
3891 * wait for the events to happen.
3892 */
3893static int
3894megasas_get_seq_num(struct megasas_instance *instance,
3895 struct megasas_evt_log_info *eli)
3896{
3897 struct megasas_cmd *cmd;
3898 struct megasas_dcmd_frame *dcmd;
3899 struct megasas_evt_log_info *el_info;
3900 dma_addr_t el_info_h = 0;
3901
3902 cmd = megasas_get_cmd(instance);
3903
3904 if (!cmd) {
3905 return -ENOMEM;
3906 }
3907
3908 dcmd = &cmd->frame->dcmd;
3909 el_info = pci_alloc_consistent(instance->pdev,
3910 sizeof(struct megasas_evt_log_info),
3911 &el_info_h);
3912
3913 if (!el_info) {
3914 megasas_return_cmd(instance, cmd);
3915 return -ENOMEM;
3916 }
3917
3918 memset(el_info, 0, sizeof(*el_info));
3919 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3920
3921 dcmd->cmd = MFI_CMD_DCMD;
3922 dcmd->cmd_status = 0x0;
3923 dcmd->sge_count = 1;
94cd65dd 3924 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 3925 dcmd->timeout = 0;
780a3762 3926 dcmd->pad_0 = 0;
94cd65dd
SS		 3927 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
3928 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
3929 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
3930 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
c4a3e0a5
BS		 3931
3932 megasas_issue_blocked_cmd(instance, cmd);
3933
3934 /*
3935 * Copy the data back into callers buffer
3936 */
94cd65dd
SS		 3937 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num);
3938 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num);
3939 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
3940 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num);
3941 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
c4a3e0a5
BS		 3942
3943 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3944 el_info, el_info_h);
3945
3946 megasas_return_cmd(instance, cmd);
3947
3948 return 0;
3949}
3950
3951/**
3952 * megasas_register_aen - Registers for asynchronous event notification
3953 * @instance: Adapter soft state
3954 * @seq_num: The starting sequence number
3955 * @class_locale: Class of the event
3956 *
3957 * This function subscribes for AEN for events beyond the @seq_num. It requests
3958 * to be notified if and only if the event is of type @class_locale
3959 */
3960static int
3961megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3962 u32 class_locale_word)
3963{
3964 int ret_val;
3965 struct megasas_cmd *cmd;
3966 struct megasas_dcmd_frame *dcmd;
3967 union megasas_evt_class_locale curr_aen;
3968 union megasas_evt_class_locale prev_aen;
3969
3970 /*
3971 * If there an AEN pending already (aen_cmd), check if the
3972 * class_locale of that pending AEN is inclusive of the new
3973 * AEN request we currently have. If it is, then we don't have
3974 * to do anything. In other words, whichever events the current
3975 * AEN request is subscribing to, have already been subscribed
3976 * to.
3977 *
3978 * If the old_cmd is _not_ inclusive, then we have to abort
3979 * that command, form a class_locale that is superset of both
3980 * old and current and re-issue to the FW
3981 */
3982
3983 curr_aen.word = class_locale_word;
3984
3985 if (instance->aen_cmd) {
3986
3987 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
94cd65dd 3988 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale);
c4a3e0a5
BS		 3989
3990 /*
3991 * A class whose enum value is smaller is inclusive of all
3992 * higher values. If a PROGRESS (= -1) was previously
3993 * registered, then a new registration requests for higher
3994 * classes need not be sent to FW. They are automatically
3995 * included.
3996 *
3997 * Locale numbers don't have such hierarchy. They are bitmap
3998 * values
3999 */
4000 if ((prev_aen.members.class <= curr_aen.members.class) &&
94cd65dd 4001 !((le16_to_cpu(prev_aen.members.locale) & curr_aen.members.locale) ^
c4a3e0a5
BS		 4002 curr_aen.members.locale)) {
4003 /*
4004 * Previously issued event registration includes
4005 * current request. Nothing to do.
4006 */
4007 return 0;
4008 } else {
94cd65dd 4009 curr_aen.members.locale |= le16_to_cpu(prev_aen.members.locale);
c4a3e0a5
BS		 4010
4011 if (prev_aen.members.class < curr_aen.members.class)
4012 curr_aen.members.class = prev_aen.members.class;
4013
4014 instance->aen_cmd->abort_aen = 1;
4015 ret_val = megasas_issue_blocked_abort_cmd(instance,
4016 instance->
4017 aen_cmd);
4018
4019 if (ret_val) {
4020 printk(KERN_DEBUG "megasas: Failed to abort "
4021 "previous AEN command\n");
4022 return ret_val;
4023 }
4024 }
4025 }
4026
4027 cmd = megasas_get_cmd(instance);
4028
4029 if (!cmd)
4030 return -ENOMEM;
4031
4032 dcmd = &cmd->frame->dcmd;
4033
4034 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
4035
4036 /*
4037 * Prepare DCMD for aen registration
4038 */
4039 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4040
4041 dcmd->cmd = MFI_CMD_DCMD;
4042 dcmd->cmd_status = 0x0;
4043 dcmd->sge_count = 1;
94cd65dd 4044 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
c4a3e0a5 4045 dcmd->timeout = 0;
780a3762 4046 dcmd->pad_0 = 0;
94cd65dd
SS		 4047 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
4048 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
4049 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
39a98554 4050 instance->last_seq_num = seq_num;
94cd65dd
SS		 4051 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
4052 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
4053 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
c4a3e0a5 4054
f4c9a131
YB		 4055 if (instance->aen_cmd != NULL) {
4056 megasas_return_cmd(instance, cmd);
4057 return 0;
4058 }
4059
c4a3e0a5
BS		 4060 /*
4061 * Store reference to the cmd used to register for AEN. When an
4062 * application wants us to register for AEN, we have to abort this
4063 * cmd and re-register with a new EVENT LOCALE supplied by that app
4064 */
4065 instance->aen_cmd = cmd;
4066
4067 /*
4068 * Issue the aen registration frame
4069 */
9c915a8c 4070 instance->instancet->issue_dcmd(instance, cmd);
c4a3e0a5
BS		 4071
4072 return 0;
4073}
4074
4075/**
4076 * megasas_start_aen - Subscribes to AEN during driver load time
4077 * @instance: Adapter soft state
4078 */
4079static int megasas_start_aen(struct megasas_instance *instance)
4080{
4081 struct megasas_evt_log_info eli;
4082 union megasas_evt_class_locale class_locale;
4083
4084 /*
4085 * Get the latest sequence number from FW
4086 */
4087 memset(&eli, 0, sizeof(eli));
4088
4089 if (megasas_get_seq_num(instance, &eli))
4090 return -1;
4091
4092 /*
4093 * Register AEN with FW for latest sequence number plus 1
4094 */
4095 class_locale.members.reserved = 0;
4096 class_locale.members.locale = MR_EVT_LOCALE_ALL;
4097 class_locale.members.class = MR_EVT_CLASS_DEBUG;
4098
94cd65dd
SS		 4099 return megasas_register_aen(instance,
4100 le32_to_cpu(eli.newest_seq_num) + 1,
4101 class_locale.word);
c4a3e0a5
BS		 4102}
4103
4104/**
4105 * megasas_io_attach - Attaches this driver to SCSI mid-layer
4106 * @instance: Adapter soft state
4107 */
4108static int megasas_io_attach(struct megasas_instance *instance)
4109{
4110 struct Scsi_Host *host = instance->host;
4111
4112 /*
4113 * Export parameters required by SCSI mid-layer
4114 */
4115 host->irq = instance->pdev->irq;
4116 host->unique_id = instance->unique_id;
404a8a1a 4117 if (instance->is_imr) {
7bebf5c7
YB		 4118 host->can_queue =
4119 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
4120 } else
4121 host->can_queue =
4122 instance->max_fw_cmds - MEGASAS_INT_CMDS;
c4a3e0a5
BS		 4123 host->this_id = instance->init_id;
4124 host->sg_tablesize = instance->max_num_sge;
42a8d2b3 4125
4126 if (instance->fw_support_ieee)
4127 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
4128
1fd10685
YB		 4129 /*
4130 * Check if the module parameter value for max_sectors can be used
4131 */
4132 if (max_sectors && max_sectors < instance->max_sectors_per_req)
4133 instance->max_sectors_per_req = max_sectors;
4134 else {
4135 if (max_sectors) {
4136 if (((instance->pdev->device ==
4137 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
4138 (instance->pdev->device ==
4139 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
4140 (max_sectors <= MEGASAS_MAX_SECTORS)) {
4141 instance->max_sectors_per_req = max_sectors;
4142 } else {
4143 printk(KERN_INFO "megasas: max_sectors should be > 0"
4144 "and <= %d (or < 1MB for GEN2 controller)\n",
4145 instance->max_sectors_per_req);
4146 }
4147 }
4148 }
4149
c4a3e0a5 4150 host->max_sectors = instance->max_sectors_per_req;
9c915a8c 4151 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
c4a3e0a5
BS		 4152 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
4153 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
4154 host->max_lun = MEGASAS_MAX_LUN;
122da302 4155 host->max_cmd_len = 16;
c4a3e0a5 4156
9c915a8c 4157 /* Fusion only supports host reset */
36807e67 4158 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
21d3c710
SS		 4159 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4160 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
9c915a8c 4161 host->hostt->eh_device_reset_handler = NULL;
4162 host->hostt->eh_bus_reset_handler = NULL;
4163 }
4164
c4a3e0a5
BS		 4165 /*
4166 * Notify the mid-layer about the new controller
4167 */
4168 if (scsi_add_host(host, &instance->pdev->dev)) {
4169 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
4170 return -ENODEV;
4171 }
4172
4173 /*
4174 * Trigger SCSI to scan our drives
4175 */
4176 scsi_scan_host(host);
4177 return 0;
4178}
4179
31ea7088 4180static int
4181megasas_set_dma_mask(struct pci_dev *pdev)
4182{
4183 /*
4184 * All our contollers are capable of performing 64-bit DMA
4185 */
4186 if (IS_DMA64) {
6a35528a 4187 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
31ea7088 4188
284901a9 4189 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 4190 goto fail_set_dma_mask;
4191 }
4192 } else {
284901a9 4193 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
31ea7088 4194 goto fail_set_dma_mask;
4195 }
94cd65dd 4196
31ea7088 4197 return 0;
4198
4199fail_set_dma_mask:
4200 return 1;
4201}
4202
c4a3e0a5
BS		 4203/**
4204 * megasas_probe_one - PCI hotplug entry point
4205 * @pdev: PCI device structure
0d49016b 4206 * @id: PCI ids of supported hotplugged adapter
c4a3e0a5 4207 */
6f039790
GKH		 4208static int megasas_probe_one(struct pci_dev *pdev,
4209 const struct pci_device_id *id)
c4a3e0a5 4210{
c8e858fe 4211 int rval, pos, i, j;
c4a3e0a5
BS		 4212 struct Scsi_Host *host;
4213 struct megasas_instance *instance;
66192dfe 4214 u16 control = 0;
4215
4216 /* Reset MSI-X in the kdump kernel */
4217 if (reset_devices) {
4218 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
4219 if (pos) {
99369065 4220 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
66192dfe 4221 &control);
4222 if (control & PCI_MSIX_FLAGS_ENABLE) {
4223 dev_info(&pdev->dev, "resetting MSI-X\n");
4224 pci_write_config_word(pdev,
99369065 4225 pos + PCI_MSIX_FLAGS,
66192dfe 4226 control &
4227 ~PCI_MSIX_FLAGS_ENABLE);
4228 }
4229 }
4230 }
c4a3e0a5
BS		 4231
4232 /*
4233 * Announce PCI information
4234 */
4235 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
4236 pdev->vendor, pdev->device, pdev->subsystem_vendor,
4237 pdev->subsystem_device);
4238
4239 printk("bus %d:slot %d:func %d\n",
4240 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
4241
4242 /*
4243 * PCI prepping: enable device set bus mastering and dma mask
4244 */
aeab3fd7 4245 rval = pci_enable_device_mem(pdev);
c4a3e0a5
BS		 4246
4247 if (rval) {
4248 return rval;
4249 }
4250
4251 pci_set_master(pdev);
4252
31ea7088 4253 if (megasas_set_dma_mask(pdev))
4254 goto fail_set_dma_mask;
c4a3e0a5
BS		 4255
4256 host = scsi_host_alloc(&megasas_template,
4257 sizeof(struct megasas_instance));
4258
4259 if (!host) {
4260 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
4261 goto fail_alloc_instance;
4262 }
4263
4264 instance = (struct megasas_instance *)host->hostdata;
4265 memset(instance, 0, sizeof(*instance));
39a98554 4266 atomic_set( &instance->fw_reset_no_pci_access, 0 );
9c915a8c 4267 instance->pdev = pdev;
c4a3e0a5 4268
9c915a8c 4269 switch (instance->pdev->device) {
4270 case PCI_DEVICE_ID_LSI_FUSION:
36807e67 4271 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 4272 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 4273 {
4274 struct fusion_context *fusion;
4275
4276 instance->ctrl_context =
4277 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
4278 if (!instance->ctrl_context) {
4279 printk(KERN_DEBUG "megasas: Failed to allocate "
4280 "memory for Fusion context info\n");
4281 goto fail_alloc_dma_buf;
4282 }
4283 fusion = instance->ctrl_context;
4284 INIT_LIST_HEAD(&fusion->cmd_pool);
4285 spin_lock_init(&fusion->cmd_pool_lock);
4286 }
4287 break;
4288 default: /* For all other supported controllers */
4289
4290 instance->producer =
4291 pci_alloc_consistent(pdev, sizeof(u32),
4292 &instance->producer_h);
4293 instance->consumer =
4294 pci_alloc_consistent(pdev, sizeof(u32),
4295 &instance->consumer_h);
4296
4297 if (!instance->producer || !instance->consumer) {
4298 printk(KERN_DEBUG "megasas: Failed to allocate"
4299 "memory for producer, consumer\n");
4300 goto fail_alloc_dma_buf;
4301 }
c4a3e0a5 4302
9c915a8c 4303 *instance->producer = 0;
4304 *instance->consumer = 0;
4305 break;
c4a3e0a5
BS		 4306 }
4307
c3518837 4308 megasas_poll_wait_aen = 0;
f4c9a131 4309 instance->flag_ieee = 0;
7e8a75f4 4310 instance->ev = NULL;
39a98554 4311 instance->issuepend_done = 1;
4312 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
404a8a1a 4313 instance->is_imr = 0;
39a98554 4314 megasas_poll_wait_aen = 0;
c4a3e0a5
BS		 4315
4316 instance->evt_detail = pci_alloc_consistent(pdev,
4317 sizeof(struct
4318 megasas_evt_detail),
4319 &instance->evt_detail_h);
4320
4321 if (!instance->evt_detail) {
4322 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4323 "event detail structure\n");
4324 goto fail_alloc_dma_buf;
4325 }
4326
4327 /*
4328 * Initialize locks and queues
4329 */
4330 INIT_LIST_HEAD(&instance->cmd_pool);
39a98554 4331 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
c4a3e0a5 4332
e4a082c7
SP		 4333 atomic_set(&instance->fw_outstanding,0);
4334
c4a3e0a5
BS		 4335 init_waitqueue_head(&instance->int_cmd_wait_q);
4336 init_waitqueue_head(&instance->abort_cmd_wait_q);
4337
4338 spin_lock_init(&instance->cmd_pool_lock);
39a98554 4339 spin_lock_init(&instance->hba_lock);
7343eb65 4340 spin_lock_init(&instance->completion_lock);
c4a3e0a5 4341
e5a69e27 4342 mutex_init(&instance->aen_mutex);
9c915a8c 4343 mutex_init(&instance->reset_mutex);
c4a3e0a5
BS		 4344
4345 /*
4346 * Initialize PCI related and misc parameters
4347 */
c4a3e0a5
BS		 4348 instance->host = host;
4349 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4350 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4351
7bebf5c7
YB		 4352 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4353 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
f4c9a131 4354 instance->flag_ieee = 1;
7bebf5c7
YB		 4355 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4356 } else
4357 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4358
658dcedb 4359 megasas_dbg_lvl = 0;
05e9ebbe 4360 instance->flag = 0;
0c79e681 4361 instance->unload = 1;
05e9ebbe 4362 instance->last_time = 0;
39a98554 4363 instance->disableOnlineCtrlReset = 1;
bc93d425 4364 instance->UnevenSpanSupport = 0;
39a98554 4365
36807e67 4366 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
21d3c710
SS		 4367 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4368 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
9c915a8c 4369 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4370 else
4371 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
658dcedb 4372
0a77066a 4373 /*
4374 * Initialize MFI Firmware
4375 */
4376 if (megasas_init_fw(instance))
4377 goto fail_init_mfi;
4378
d46a3ad6 4379retry_irq_register:
c4a3e0a5
BS		 4380 /*
4381 * Register IRQ
4382 */
c8e858fe 4383 if (instance->msix_vectors) {
4384 for (i = 0 ; i < instance->msix_vectors; i++) {
4385 instance->irq_context[i].instance = instance;
4386 instance->irq_context[i].MSIxIndex = i;
4387 if (request_irq(instance->msixentry[i].vector,
4388 instance->instancet->service_isr, 0,
4389 "megasas",
4390 &instance->irq_context[i])) {
4391 printk(KERN_DEBUG "megasas: Failed to "
4392 "register IRQ for vector %d.\n", i);
4393 for (j = 0 ; j < i ; j++)
4394 free_irq(
4395 instance->msixentry[j].vector,
4396 &instance->irq_context[j]);
d46a3ad6
SS		 4397 /* Retry irq register for IO_APIC */
4398 instance->msix_vectors = 0;
4399 goto retry_irq_register;
c8e858fe 4400 }
4401 }
4402 } else {
4403 instance->irq_context[0].instance = instance;
4404 instance->irq_context[0].MSIxIndex = 0;
4405 if (request_irq(pdev->irq, instance->instancet->service_isr,
4406 IRQF_SHARED, "megasas",
4407 &instance->irq_context[0])) {
4408 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4409 goto fail_irq;
4410 }
c4a3e0a5
BS		 4411 }
4412
d46a3ad6 4413 instance->instancet->enable_intr(instance);
c4a3e0a5
BS		 4414
4415 /*
4416 * Store instance in PCI softstate
4417 */
4418 pci_set_drvdata(pdev, instance);
4419
4420 /*
4421 * Add this controller to megasas_mgmt_info structure so that it
4422 * can be exported to management applications
4423 */
4424 megasas_mgmt_info.count++;
4425 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4426 megasas_mgmt_info.max_index++;
4427
541f90b7 4428 /*
4429 * Register with SCSI mid-layer
4430 */
4431 if (megasas_io_attach(instance))
4432 goto fail_io_attach;
4433
4434 instance->unload = 0;
4435
c4a3e0a5
BS		 4436 /*
4437 * Initiate AEN (Asynchronous Event Notification)
4438 */
4439 if (megasas_start_aen(instance)) {
4440 printk(KERN_DEBUG "megasas: start aen failed\n");
4441 goto fail_start_aen;
4442 }
4443
c4a3e0a5
BS		 4444 return 0;
4445
4446 fail_start_aen:
4447 fail_io_attach:
4448 megasas_mgmt_info.count--;
4449 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4450 megasas_mgmt_info.max_index--;
4451
4452 pci_set_drvdata(pdev, NULL);
d46a3ad6 4453 instance->instancet->disable_intr(instance);
c8e858fe 4454 if (instance->msix_vectors)
4455 for (i = 0 ; i < instance->msix_vectors; i++)
4456 free_irq(instance->msixentry[i].vector,
4457 &instance->irq_context[i]);
4458 else
4459 free_irq(instance->pdev->irq, &instance->irq_context[0]);
eb1b1237 4460fail_irq:
36807e67 4461 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
21d3c710
SS		 4462 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4463 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
eb1b1237 4464 megasas_release_fusion(instance);
4465 else
4466 megasas_release_mfi(instance);
c4a3e0a5 4467 fail_init_mfi:
c8e858fe 4468 if (instance->msix_vectors)
0a77066a 4469 pci_disable_msix(instance->pdev);
c4a3e0a5
BS		 4470 fail_alloc_dma_buf:
4471 if (instance->evt_detail)
4472 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4473 instance->evt_detail,
4474 instance->evt_detail_h);
4475
eb1b1237 4476 if (instance->producer)
c4a3e0a5
BS		 4477 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4478 instance->producer_h);
4479 if (instance->consumer)
4480 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4481 instance->consumer_h);
4482 scsi_host_put(host);
4483
4484 fail_alloc_instance:
4485 fail_set_dma_mask:
4486 pci_disable_device(pdev);
4487
4488 return -ENODEV;
4489}
4490
4491/**
4492 * megasas_flush_cache - Requests FW to flush all its caches
4493 * @instance: Adapter soft state
4494 */
4495static void megasas_flush_cache(struct megasas_instance *instance)
4496{
4497 struct megasas_cmd *cmd;
4498 struct megasas_dcmd_frame *dcmd;
4499
39a98554 4500 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4501 return;
4502
c4a3e0a5
BS		 4503 cmd = megasas_get_cmd(instance);
4504
4505 if (!cmd)
4506 return;
4507
4508 dcmd = &cmd->frame->dcmd;
4509
4510 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4511
4512 dcmd->cmd = MFI_CMD_DCMD;
4513 dcmd->cmd_status = 0x0;
4514 dcmd->sge_count = 0;
94cd65dd 4515 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
c4a3e0a5 4516 dcmd->timeout = 0;
780a3762 4517 dcmd->pad_0 = 0;
c4a3e0a5 4518 dcmd->data_xfer_len = 0;
94cd65dd 4519 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
c4a3e0a5
BS		 4520 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4521
4522 megasas_issue_blocked_cmd(instance, cmd);
4523
4524 megasas_return_cmd(instance, cmd);
4525
4526 return;
4527}
4528
4529/**
4530 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4531 * @instance: Adapter soft state
31ea7088 4532 * @opcode: Shutdown/Hibernate
c4a3e0a5 4533 */
31ea7088 4534static void megasas_shutdown_controller(struct megasas_instance *instance,
4535 u32 opcode)
c4a3e0a5
BS		 4536{
4537 struct megasas_cmd *cmd;
4538 struct megasas_dcmd_frame *dcmd;
4539
39a98554 4540 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4541 return;
4542
c4a3e0a5
BS		 4543 cmd = megasas_get_cmd(instance);
4544
4545 if (!cmd)
4546 return;
4547
4548 if (instance->aen_cmd)
4549 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
9c915a8c 4550 if (instance->map_update_cmd)
4551 megasas_issue_blocked_abort_cmd(instance,
4552 instance->map_update_cmd);
c4a3e0a5
BS		 4553 dcmd = &cmd->frame->dcmd;
4554
4555 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4556
4557 dcmd->cmd = MFI_CMD_DCMD;
4558 dcmd->cmd_status = 0x0;
4559 dcmd->sge_count = 0;
94cd65dd 4560 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
c4a3e0a5 4561 dcmd->timeout = 0;
780a3762 4562 dcmd->pad_0 = 0;
c4a3e0a5 4563 dcmd->data_xfer_len = 0;
94cd65dd 4564 dcmd->opcode = cpu_to_le32(opcode);
c4a3e0a5
BS		 4565
4566 megasas_issue_blocked_cmd(instance, cmd);
4567
4568 megasas_return_cmd(instance, cmd);
4569
4570 return;
4571}
4572
33139b21 4573#ifdef CONFIG_PM
31ea7088 4574/**
ad84db2e 4575 * megasas_suspend - driver suspend entry point
4576 * @pdev: PCI device structure
31ea7088 4577 * @state: PCI power state to suspend routine
4578 */
33139b21 4579static int
31ea7088 4580megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4581{
4582 struct Scsi_Host *host;
4583 struct megasas_instance *instance;
c8e858fe 4584 int i;
31ea7088 4585
4586 instance = pci_get_drvdata(pdev);
4587 host = instance->host;
0c79e681 4588 instance->unload = 1;
31ea7088 4589
4590 megasas_flush_cache(instance);
4591 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7e8a75f4
YB		 4592
4593 /* cancel the delayed work if this work still in queue */
4594 if (instance->ev != NULL) {
4595 struct megasas_aen_event *ev = instance->ev;
c1d390d8 4596 cancel_delayed_work_sync(&ev->hotplug_work);
7e8a75f4
YB		 4597 instance->ev = NULL;
4598 }
4599
31ea7088 4600 tasklet_kill(&instance->isr_tasklet);
4601
4602 pci_set_drvdata(instance->pdev, instance);
d46a3ad6 4603 instance->instancet->disable_intr(instance);
c8e858fe 4604
4605 if (instance->msix_vectors)
4606 for (i = 0 ; i < instance->msix_vectors; i++)
4607 free_irq(instance->msixentry[i].vector,
4608 &instance->irq_context[i]);
4609 else
4610 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4611 if (instance->msix_vectors)
80d9da98 4612 pci_disable_msix(instance->pdev);
31ea7088 4613
4614 pci_save_state(pdev);
4615 pci_disable_device(pdev);
4616
4617 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4618
4619 return 0;
4620}
4621
4622/**
4623 * megasas_resume- driver resume entry point
4624 * @pdev: PCI device structure
4625 */
33139b21 4626static int
31ea7088 4627megasas_resume(struct pci_dev *pdev)
4628{
c8e858fe 4629 int rval, i, j;
31ea7088 4630 struct Scsi_Host *host;
4631 struct megasas_instance *instance;
4632
4633 instance = pci_get_drvdata(pdev);
4634 host = instance->host;
4635 pci_set_power_state(pdev, PCI_D0);
4636 pci_enable_wake(pdev, PCI_D0, 0);
4637 pci_restore_state(pdev);
4638
4639 /*
4640 * PCI prepping: enable device set bus mastering and dma mask
4641 */
aeab3fd7 4642 rval = pci_enable_device_mem(pdev);
31ea7088 4643
4644 if (rval) {
4645 printk(KERN_ERR "megasas: Enable device failed\n");
4646 return rval;
4647 }
4648
4649 pci_set_master(pdev);
4650
4651 if (megasas_set_dma_mask(pdev))
4652 goto fail_set_dma_mask;
4653
4654 /*
4655 * Initialize MFI Firmware
4656 */
4657
31ea7088 4658 atomic_set(&instance->fw_outstanding, 0);
4659
4660 /*
4661 * We expect the FW state to be READY
4662 */
058a8fac 4663 if (megasas_transition_to_ready(instance, 0))
31ea7088 4664 goto fail_ready_state;
4665
3f1abce4 4666 /* Now re-enable MSI-X */
c8e858fe 4667 if (instance->msix_vectors)
4668 pci_enable_msix(instance->pdev, instance->msixentry,
4669 instance->msix_vectors);
3f1abce4 4670
9c915a8c 4671 switch (instance->pdev->device) {
4672 case PCI_DEVICE_ID_LSI_FUSION:
36807e67 4673 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 4674 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 4675 {
4676 megasas_reset_reply_desc(instance);
4677 if (megasas_ioc_init_fusion(instance)) {
4678 megasas_free_cmds(instance);
4679 megasas_free_cmds_fusion(instance);
4680 goto fail_init_mfi;
4681 }
4682 if (!megasas_get_map_info(instance))
4683 megasas_sync_map_info(instance);
4684 }
4685 break;
4686 default:
4687 *instance->producer = 0;
4688 *instance->consumer = 0;
4689 if (megasas_issue_init_mfi(instance))
4690 goto fail_init_mfi;
4691 break;
4692 }
31ea7088 4693
9c915a8c 4694 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4695 (unsigned long)instance);
31ea7088 4696
4697 /*
4698 * Register IRQ
4699 */
c8e858fe 4700 if (instance->msix_vectors) {
4701 for (i = 0 ; i < instance->msix_vectors; i++) {
4702 instance->irq_context[i].instance = instance;
4703 instance->irq_context[i].MSIxIndex = i;
4704 if (request_irq(instance->msixentry[i].vector,
4705 instance->instancet->service_isr, 0,
4706 "megasas",
4707 &instance->irq_context[i])) {
4708 printk(KERN_DEBUG "megasas: Failed to "
4709 "register IRQ for vector %d.\n", i);
4710 for (j = 0 ; j < i ; j++)
4711 free_irq(
4712 instance->msixentry[j].vector,
4713 &instance->irq_context[j]);
4714 goto fail_irq;
4715 }
4716 }
4717 } else {
4718 instance->irq_context[0].instance = instance;
4719 instance->irq_context[0].MSIxIndex = 0;
4720 if (request_irq(pdev->irq, instance->instancet->service_isr,
4721 IRQF_SHARED, "megasas",
4722 &instance->irq_context[0])) {
4723 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4724 goto fail_irq;
4725 }
31ea7088 4726 }
4727
d46a3ad6 4728 instance->instancet->enable_intr(instance);
0c79e681
YB		 4729 instance->unload = 0;
4730
541f90b7 4731 /*
4732 * Initiate AEN (Asynchronous Event Notification)
4733 */
4734 if (megasas_start_aen(instance))
4735 printk(KERN_ERR "megasas: Start AEN failed\n");
4736
31ea7088 4737 return 0;
4738
4739fail_irq:
4740fail_init_mfi:
4741 if (instance->evt_detail)
4742 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4743 instance->evt_detail,
4744 instance->evt_detail_h);
4745
4746 if (instance->producer)
4747 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4748 instance->producer_h);
4749 if (instance->consumer)
4750 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4751 instance->consumer_h);
4752 scsi_host_put(host);
4753
4754fail_set_dma_mask:
4755fail_ready_state:
4756
4757 pci_disable_device(pdev);
4758
4759 return -ENODEV;
4760}
33139b21
JS		 4761#else
4762#define megasas_suspend NULL
4763#define megasas_resume NULL
4764#endif
31ea7088 4765
c4a3e0a5
BS		 4766/**
4767 * megasas_detach_one - PCI hot"un"plug entry point
4768 * @pdev: PCI device structure
4769 */
6f039790 4770static void megasas_detach_one(struct pci_dev *pdev)
c4a3e0a5
BS		 4771{
4772 int i;
4773 struct Scsi_Host *host;
4774 struct megasas_instance *instance;
9c915a8c 4775 struct fusion_context *fusion;
c4a3e0a5
BS		 4776
4777 instance = pci_get_drvdata(pdev);
c3518837 4778 instance->unload = 1;
c4a3e0a5 4779 host = instance->host;
9c915a8c 4780 fusion = instance->ctrl_context;
c4a3e0a5
BS		 4781
4782 scsi_remove_host(instance->host);
4783 megasas_flush_cache(instance);
31ea7088 4784 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7e8a75f4
YB		 4785
4786 /* cancel the delayed work if this work still in queue*/
4787 if (instance->ev != NULL) {
4788 struct megasas_aen_event *ev = instance->ev;
c1d390d8 4789 cancel_delayed_work_sync(&ev->hotplug_work);
7e8a75f4
YB		 4790 instance->ev = NULL;
4791 }
4792
5d018ad0 4793 tasklet_kill(&instance->isr_tasklet);
c4a3e0a5
BS		 4794
4795 /*
4796 * Take the instance off the instance array. Note that we will not
4797 * decrement the max_index. We let this array be sparse array
4798 */
4799 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4800 if (megasas_mgmt_info.instance[i] == instance) {
4801 megasas_mgmt_info.count--;
4802 megasas_mgmt_info.instance[i] = NULL;
4803
4804 break;
4805 }
4806 }
4807
4808 pci_set_drvdata(instance->pdev, NULL);
4809
d46a3ad6 4810 instance->instancet->disable_intr(instance);
c4a3e0a5 4811
c8e858fe 4812 if (instance->msix_vectors)
4813 for (i = 0 ; i < instance->msix_vectors; i++)
4814 free_irq(instance->msixentry[i].vector,
4815 &instance->irq_context[i]);
4816 else
4817 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4818 if (instance->msix_vectors)
80d9da98 4819 pci_disable_msix(instance->pdev);
c4a3e0a5 4820
9c915a8c 4821 switch (instance->pdev->device) {
4822 case PCI_DEVICE_ID_LSI_FUSION:
36807e67 4823 case PCI_DEVICE_ID_LSI_INVADER:
21d3c710 4824 case PCI_DEVICE_ID_LSI_FURY:
9c915a8c 4825 megasas_release_fusion(instance);
4826 for (i = 0; i < 2 ; i++)
4827 if (fusion->ld_map[i])
4828 dma_free_coherent(&instance->pdev->dev,
4829 fusion->map_sz,
4830 fusion->ld_map[i],
4831 fusion->
4832 ld_map_phys[i]);
4833 kfree(instance->ctrl_context);
4834 break;
4835 default:
4836 megasas_release_mfi(instance);
9c915a8c 4837 pci_free_consistent(pdev, sizeof(u32),
4838 instance->producer,
4839 instance->producer_h);
4840 pci_free_consistent(pdev, sizeof(u32),
4841 instance->consumer,
4842 instance->consumer_h);
4843 break;
4844 }
c4a3e0a5 4845
105900d5
SS		 4846 if (instance->evt_detail)
4847 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4848 instance->evt_detail, instance->evt_detail_h);
c4a3e0a5
BS		 4849 scsi_host_put(host);
4850
4851 pci_set_drvdata(pdev, NULL);
4852
4853 pci_disable_device(pdev);
4854
4855 return;
4856}
4857
4858/**
4859 * megasas_shutdown - Shutdown entry point
4860 * @device: Generic device structure
4861 */
4862static void megasas_shutdown(struct pci_dev *pdev)
4863{
c8e858fe 4864 int i;
c4a3e0a5 4865 struct megasas_instance *instance = pci_get_drvdata(pdev);
c8e858fe 4866
0c79e681 4867 instance->unload = 1;
c4a3e0a5 4868 megasas_flush_cache(instance);
530e6fc1 4869 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
d46a3ad6 4870 instance->instancet->disable_intr(instance);
c8e858fe 4871 if (instance->msix_vectors)
4872 for (i = 0 ; i < instance->msix_vectors; i++)
4873 free_irq(instance->msixentry[i].vector,
4874 &instance->irq_context[i]);
4875 else
4876 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4877 if (instance->msix_vectors)
46fd256e 4878 pci_disable_msix(instance->pdev);
c4a3e0a5
BS		 4879}
4880
4881/**
4882 * megasas_mgmt_open - char node "open" entry point
4883 */
4884static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4885{
4886 /*
4887 * Allow only those users with admin rights
4888 */
4889 if (!capable(CAP_SYS_ADMIN))
4890 return -EACCES;
4891
4892 return 0;
4893}
4894
c4a3e0a5
BS		 4895/**
4896 * megasas_mgmt_fasync - Async notifier registration from applications
4897 *
4898 * This function adds the calling process to a driver global queue. When an
4899 * event occurs, SIGIO will be sent to all processes in this queue.
4900 */
4901static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4902{
4903 int rc;
4904
0b950672 4905 mutex_lock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 4906
4907 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4908
0b950672 4909 mutex_unlock(&megasas_async_queue_mutex);
c4a3e0a5
BS		 4910
4911 if (rc >= 0) {
4912 /* For sanity check when we get ioctl */
4913 filep->private_data = filep;
4914 return 0;
4915 }
4916
4917 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4918
4919 return rc;
4920}
4921
c3518837
YB		 4922/**
4923 * megasas_mgmt_poll - char node "poll" entry point
4924 * */
4925static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4926{
4927 unsigned int mask;
4928 unsigned long flags;
4929 poll_wait(file, &megasas_poll_wait, wait);
4930 spin_lock_irqsave(&poll_aen_lock, flags);
4931 if (megasas_poll_wait_aen)
4932 mask = (POLLIN | POLLRDNORM);
4933 else
4934 mask = 0;
4935 spin_unlock_irqrestore(&poll_aen_lock, flags);
4936 return mask;
4937}
4938
c4a3e0a5
BS		 4939/**
4940 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4941 * @instance: Adapter soft state
4942 * @argp: User's ioctl packet
4943 */
4944static int
4945megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4946 struct megasas_iocpacket __user * user_ioc,
4947 struct megasas_iocpacket *ioc)
4948{
4949 struct megasas_sge32 *kern_sge32;
4950 struct megasas_cmd *cmd;
4951 void *kbuff_arr[MAX_IOCTL_SGE];
4952 dma_addr_t buf_handle = 0;
4953 int error = 0, i;
4954 void *sense = NULL;
4955 dma_addr_t sense_handle;
7b2519af 4956 unsigned long *sense_ptr;
c4a3e0a5
BS		 4957
4958 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4959
4960 if (ioc->sge_count > MAX_IOCTL_SGE) {
4961 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4962 ioc->sge_count, MAX_IOCTL_SGE);
4963 return -EINVAL;
4964 }
4965
4966 cmd = megasas_get_cmd(instance);
4967 if (!cmd) {
4968 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4969 return -ENOMEM;
4970 }
4971
4972 /*
4973 * User's IOCTL packet has 2 frames (maximum). Copy those two
4974 * frames into our cmd's frames. cmd->frame's context will get
4975 * overwritten when we copy from user's frames. So set that value
4976 * alone separately
4977 */
4978 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
94cd65dd 4979 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
c3518837 4980 cmd->frame->hdr.pad_0 = 0;
94cd65dd
SS		 4981 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
4982 MFI_FRAME_SGL64 |
4983 MFI_FRAME_SENSE64));
c4a3e0a5
BS		 4984
4985 /*
4986 * The management interface between applications and the fw uses
4987 * MFI frames. E.g, RAID configuration changes, LD property changes
4988 * etc are accomplishes through different kinds of MFI frames. The
4989 * driver needs to care only about substituting user buffers with
4990 * kernel buffers in SGLs. The location of SGL is embedded in the
4991 * struct iocpacket itself.
4992 */
4993 kern_sge32 = (struct megasas_sge32 *)
4994 ((unsigned long)cmd->frame + ioc->sgl_off);
4995
4996 /*
4997 * For each user buffer, create a mirror buffer and copy in
4998 */
4999 for (i = 0; i < ioc->sge_count; i++) {
98cb7e44
BM		 5000 if (!ioc->sgl[i].iov_len)
5001 continue;
5002
9f35fa8a 5003 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
c4a3e0a5 5004 ioc->sgl[i].iov_len,
9f35fa8a 5005 &buf_handle, GFP_KERNEL);
c4a3e0a5
BS		 5006 if (!kbuff_arr[i]) {
5007 printk(KERN_DEBUG "megasas: Failed to alloc "
5008 "kernel SGL buffer for IOCTL \n");
5009 error = -ENOMEM;
5010 goto out;
5011 }
5012
5013 /*
5014 * We don't change the dma_coherent_mask, so
5015 * pci_alloc_consistent only returns 32bit addresses
5016 */
94cd65dd
SS		 5017 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
5018 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
c4a3e0a5
BS		 5019
5020 /*
5021 * We created a kernel buffer corresponding to the
5022 * user buffer. Now copy in from the user buffer
5023 */
5024 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
5025 (u32) (ioc->sgl[i].iov_len))) {
5026 error = -EFAULT;
5027 goto out;
5028 }
5029 }
5030
5031 if (ioc->sense_len) {
9f35fa8a
SP		 5032 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
5033 &sense_handle, GFP_KERNEL);
c4a3e0a5
BS		 5034 if (!sense) {
5035 error = -ENOMEM;
5036 goto out;
5037 }
5038
5039 sense_ptr =
7b2519af 5040 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
94cd65dd 5041 *sense_ptr = cpu_to_le32(sense_handle);
c4a3e0a5
BS		 5042 }
5043
5044 /*
5045 * Set the sync_cmd flag so that the ISR knows not to complete this
5046 * cmd to the SCSI mid-layer
5047 */
5048 cmd->sync_cmd = 1;
5049 megasas_issue_blocked_cmd(instance, cmd);
5050 cmd->sync_cmd = 0;
5051
5052 /*
5053 * copy out the kernel buffers to user buffers
5054 */
5055 for (i = 0; i < ioc->sge_count; i++) {
5056 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
5057 ioc->sgl[i].iov_len)) {
5058 error = -EFAULT;
5059 goto out;
5060 }
5061 }
5062
5063 /*
5064 * copy out the sense
5065 */
5066 if (ioc->sense_len) {
5067 /*
b70a41e0 5068 * sense_ptr points to the location that has the user
c4a3e0a5
BS		 5069 * sense buffer address
5070 */
7b2519af
YB		 5071 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
5072 ioc->sense_off);
c4a3e0a5 5073
b70a41e0 5074 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
5075 sense, ioc->sense_len)) {
b10c36a5 5076 printk(KERN_ERR "megasas: Failed to copy out to user "
5077 "sense data\n");
c4a3e0a5
BS		 5078 error = -EFAULT;
5079 goto out;
5080 }
5081 }
5082
5083 /*
5084 * copy the status codes returned by the fw
5085 */
5086 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
5087 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
5088 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
5089 error = -EFAULT;
5090 }
5091
5092 out:
5093 if (sense) {
9f35fa8a 5094 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
c4a3e0a5
BS		 5095 sense, sense_handle);
5096 }
5097
7a6a731b
BM		 5098 for (i = 0; i < ioc->sge_count; i++) {
5099 if (kbuff_arr[i])
5100 dma_free_coherent(&instance->pdev->dev,
94cd65dd 5101 le32_to_cpu(kern_sge32[i].length),
7a6a731b 5102 kbuff_arr[i],
94cd65dd 5103 le32_to_cpu(kern_sge32[i].phys_addr));
c4a3e0a5
BS		 5104 }
5105
5106 megasas_return_cmd(instance, cmd);
5107 return error;
5108}
5109
c4a3e0a5
BS		 5110static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
5111{
5112 struct megasas_iocpacket __user *user_ioc =
5113 (struct megasas_iocpacket __user *)arg;
5114 struct megasas_iocpacket *ioc;
5115 struct megasas_instance *instance;
5116 int error;
39a98554 5117 int i;
5118 unsigned long flags;
5119 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 5120
5121 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
5122 if (!ioc)
5123 return -ENOMEM;
5124
5125 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
5126 error = -EFAULT;
5127 goto out_kfree_ioc;
5128 }
5129
5130 instance = megasas_lookup_instance(ioc->host_no);
5131 if (!instance) {
5132 error = -ENODEV;
5133 goto out_kfree_ioc;
5134 }
5135
39a98554 5136 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5137 printk(KERN_ERR "Controller in crit error\n");
0c79e681
YB		 5138 error = -ENODEV;
5139 goto out_kfree_ioc;
5140 }
5141
5142 if (instance->unload == 1) {
5143 error = -ENODEV;
5144 goto out_kfree_ioc;
5145 }
5146
c4a3e0a5
BS		 5147 /*
5148 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
5149 */
5150 if (down_interruptible(&instance->ioctl_sem)) {
5151 error = -ERESTARTSYS;
5152 goto out_kfree_ioc;
5153 }
39a98554 5154
5155 for (i = 0; i < wait_time; i++) {
5156
5157 spin_lock_irqsave(&instance->hba_lock, flags);
5158 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5159 spin_unlock_irqrestore(&instance->hba_lock, flags);
5160 break;
5161 }
5162 spin_unlock_irqrestore(&instance->hba_lock, flags);
5163
5164 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5165 printk(KERN_NOTICE "megasas: waiting"
5166 "for controller reset to finish\n");
5167 }
5168
5169 msleep(1000);
5170 }
5171
5172 spin_lock_irqsave(&instance->hba_lock, flags);
5173 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5174 spin_unlock_irqrestore(&instance->hba_lock, flags);
5175
5176 printk(KERN_ERR "megaraid_sas: timed out while"
5177 "waiting for HBA to recover\n");
5178 error = -ENODEV;
c64e483e 5179 goto out_up;
39a98554 5180 }
5181 spin_unlock_irqrestore(&instance->hba_lock, flags);
5182
c4a3e0a5 5183 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
c64e483e 5184 out_up:
c4a3e0a5
BS		 5185 up(&instance->ioctl_sem);
5186
5187 out_kfree_ioc:
5188 kfree(ioc);
5189 return error;
5190}
5191
5192static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
5193{
5194 struct megasas_instance *instance;
5195 struct megasas_aen aen;
5196 int error;
39a98554 5197 int i;
5198 unsigned long flags;
5199 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
c4a3e0a5
BS		 5200
5201 if (file->private_data != file) {
5202 printk(KERN_DEBUG "megasas: fasync_helper was not "
5203 "called first\n");
5204 return -EINVAL;
5205 }
5206
5207 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
5208 return -EFAULT;
5209
5210 instance = megasas_lookup_instance(aen.host_no);
5211
5212 if (!instance)
5213 return -ENODEV;
5214
39a98554 5215 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5216 return -ENODEV;
0c79e681
YB		 5217 }
5218
5219 if (instance->unload == 1) {
5220 return -ENODEV;
5221 }
5222
39a98554 5223 for (i = 0; i < wait_time; i++) {
5224
5225 spin_lock_irqsave(&instance->hba_lock, flags);
5226 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5227 spin_unlock_irqrestore(&instance->hba_lock,
5228 flags);
5229 break;
5230 }
5231
5232 spin_unlock_irqrestore(&instance->hba_lock, flags);
5233
5234 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5235 printk(KERN_NOTICE "megasas: waiting for"
5236 "controller reset to finish\n");
5237 }
5238
5239 msleep(1000);
5240 }
5241
5242 spin_lock_irqsave(&instance->hba_lock, flags);
5243 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5244 spin_unlock_irqrestore(&instance->hba_lock, flags);
5245 printk(KERN_ERR "megaraid_sas: timed out while waiting"
5246 "for HBA to recover.\n");
5247 return -ENODEV;
5248 }
5249 spin_unlock_irqrestore(&instance->hba_lock, flags);
5250
e5a69e27 5251 mutex_lock(&instance->aen_mutex);
c4a3e0a5
BS		 5252 error = megasas_register_aen(instance, aen.seq_num,
5253 aen.class_locale_word);
e5a69e27 5254 mutex_unlock(&instance->aen_mutex);
c4a3e0a5
BS		 5255 return error;
5256}
5257
5258/**
5259 * megasas_mgmt_ioctl - char node ioctl entry point
5260 */
5261static long
5262megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
5263{
5264 switch (cmd) {
5265 case MEGASAS_IOC_FIRMWARE:
5266 return megasas_mgmt_ioctl_fw(file, arg);
5267
5268 case MEGASAS_IOC_GET_AEN:
5269 return megasas_mgmt_ioctl_aen(file, arg);
5270 }
5271
5272 return -ENOTTY;
5273}
5274
5275#ifdef CONFIG_COMPAT
5276static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
5277{
5278 struct compat_megasas_iocpacket __user *cioc =
5279 (struct compat_megasas_iocpacket __user *)arg;
5280 struct megasas_iocpacket __user *ioc =
5281 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
5282 int i;
5283 int error = 0;
b3dc1a21 5284 compat_uptr_t ptr;
c4a3e0a5 5285
83aabc1b
JG		 5286 if (clear_user(ioc, sizeof(*ioc)))
5287 return -EFAULT;
c4a3e0a5
BS		 5288
5289 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
5290 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
5291 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
5292 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
5293 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
5294 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
5295 return -EFAULT;
5296
b3dc1a21
TH		 5297 /*
5298 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5299 * sense_len is not null, so prepare the 64bit value under
5300 * the same condition.
5301 */
5302 if (ioc->sense_len) {
5303 void __user **sense_ioc_ptr =
5304 (void __user **)(ioc->frame.raw + ioc->sense_off);
5305 compat_uptr_t *sense_cioc_ptr =
5306 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
5307 if (get_user(ptr, sense_cioc_ptr) ||
5308 put_user(compat_ptr(ptr), sense_ioc_ptr))
5309 return -EFAULT;
5310 }
c4a3e0a5 5311
b3dc1a21 5312 for (i = 0; i < MAX_IOCTL_SGE; i++) {
c4a3e0a5
BS		 5313 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
5314 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
5315 copy_in_user(&ioc->sgl[i].iov_len,
5316 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
5317 return -EFAULT;
5318 }
5319
5320 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
5321
5322 if (copy_in_user(&cioc->frame.hdr.cmd_status,
5323 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
5324 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
5325 return -EFAULT;
5326 }
5327 return error;
5328}
5329
5330static long
5331megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
5332 unsigned long arg)
5333{
5334 switch (cmd) {
cb59aa6a
SP		 5335 case MEGASAS_IOC_FIRMWARE32:
5336 return megasas_mgmt_compat_ioctl_fw(file, arg);
c4a3e0a5
BS		 5337 case MEGASAS_IOC_GET_AEN:
5338 return megasas_mgmt_ioctl_aen(file, arg);
5339 }
5340
5341 return -ENOTTY;
5342}
5343#endif
5344
5345/*
5346 * File operations structure for management interface
5347 */
00977a59 5348static const struct file_operations megasas_mgmt_fops = {
c4a3e0a5
BS		 5349 .owner = THIS_MODULE,
5350 .open = megasas_mgmt_open,
c4a3e0a5
BS		 5351 .fasync = megasas_mgmt_fasync,
5352 .unlocked_ioctl = megasas_mgmt_ioctl,
c3518837 5353 .poll = megasas_mgmt_poll,
c4a3e0a5
BS		 5354#ifdef CONFIG_COMPAT
5355 .compat_ioctl = megasas_mgmt_compat_ioctl,
5356#endif
6038f373 5357 .llseek = noop_llseek,
c4a3e0a5
BS		 5358};
5359
5360/*
5361 * PCI hotplug support registration structure
5362 */
5363static struct pci_driver megasas_pci_driver = {
5364
5365 .name = "megaraid_sas",
5366 .id_table = megasas_pci_table,
5367 .probe = megasas_probe_one,
6f039790 5368 .remove = megasas_detach_one,
31ea7088 5369 .suspend = megasas_suspend,
5370 .resume = megasas_resume,
c4a3e0a5
BS		 5371 .shutdown = megasas_shutdown,
5372};
5373
5374/*
5375 * Sysfs driver attributes
5376 */
5377static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5378{
5379 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5380 MEGASAS_VERSION);
5381}
5382
5383static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5384
5385static ssize_t
5386megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5387{
5388 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5389 MEGASAS_RELDATE);
5390}
5391
5392static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5393 NULL);
5394
72c4fd36
YB		 5395static ssize_t
5396megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5397{
5398 return sprintf(buf, "%u\n", support_poll_for_event);
5399}
5400
5401static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5402 megasas_sysfs_show_support_poll_for_event, NULL);
5403
837f5fe8
YB		 5404 static ssize_t
5405megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5406{
5407 return sprintf(buf, "%u\n", support_device_change);
5408}
5409
5410static DRIVER_ATTR(support_device_change, S_IRUGO,
5411 megasas_sysfs_show_support_device_change, NULL);
5412
658dcedb
SP		 5413static ssize_t
5414megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5415{
ad84db2e 5416 return sprintf(buf, "%u\n", megasas_dbg_lvl);
658dcedb
SP		 5417}
5418
5419static ssize_t
5420megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5421{
5422 int retval = count;
5423 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5424 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5425 retval = -EINVAL;
5426 }
5427 return retval;
5428}
5429
66dca9b8 5430static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
ad84db2e 5431 megasas_sysfs_set_dbg_lvl);
5432
7e8a75f4
YB		 5433static void
5434megasas_aen_polling(struct work_struct *work)
5435{
5436 struct megasas_aen_event *ev =
c1d390d8 5437 container_of(work, struct megasas_aen_event, hotplug_work.work);
7e8a75f4
YB		 5438 struct megasas_instance *instance = ev->instance;
5439 union megasas_evt_class_locale class_locale;
5440 struct Scsi_Host *host;
5441 struct scsi_device *sdev1;
5442 u16 pd_index = 0;
c9786842 5443 u16 ld_index = 0;
7e8a75f4
YB		 5444 int i, j, doscan = 0;
5445 u32 seq_num;
5446 int error;
5447
5448 if (!instance) {
5449 printk(KERN_ERR "invalid instance!\n");
5450 kfree(ev);
5451 return;
5452 }
5453 instance->ev = NULL;
5454 host = instance->host;
5455 if (instance->evt_detail) {
5456
94cd65dd 5457 switch (le32_to_cpu(instance->evt_detail->code)) {
7e8a75f4 5458 case MR_EVT_PD_INSERTED:
c9786842
YB		 5459 if (megasas_get_pd_list(instance) == 0) {
5460 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5461 for (j = 0;
5462 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5463 j++) {
5464
5465 pd_index =
5466 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5467
5468 sdev1 =
5469 scsi_device_lookup(host, i, j, 0);
5470
5471 if (instance->pd_list[pd_index].driveState
5472 == MR_PD_STATE_SYSTEM) {
5473 if (!sdev1) {
5474 scsi_add_device(host, i, j, 0);
5475 }
5476
5477 if (sdev1)
5478 scsi_device_put(sdev1);
5479 }
5480 }
5481 }
5482 }
5483 doscan = 0;
5484 break;
5485
7e8a75f4 5486 case MR_EVT_PD_REMOVED:
c9786842 5487 if (megasas_get_pd_list(instance) == 0) {
c9786842
YB		 5488 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5489 for (j = 0;
5490 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5491 j++) {
5492
5493 pd_index =
5494 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5495
5496 sdev1 =
5497 scsi_device_lookup(host, i, j, 0);
5498
5499 if (instance->pd_list[pd_index].driveState
5500 == MR_PD_STATE_SYSTEM) {
5501 if (sdev1) {
5502 scsi_device_put(sdev1);
5503 }
5504 } else {
5505 if (sdev1) {
5506 scsi_remove_device(sdev1);
5507 scsi_device_put(sdev1);
5508 }
5509 }
5510 }
5511 }
5512 }
5513 doscan = 0;
5514 break;
5515
5516 case MR_EVT_LD_OFFLINE:
4c598b23 5517 case MR_EVT_CFG_CLEARED:
c9786842 5518 case MR_EVT_LD_DELETED:
21c9e160 5519 if (megasas_ld_list_query(instance,
5520 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5521 megasas_get_ld_list(instance);
c9786842
YB		 5522 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5523 for (j = 0;
5524 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5525 j++) {
5526
5527 ld_index =
5528 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5529
5530 sdev1 = scsi_device_lookup(host,
21c9e160 5531 MEGASAS_MAX_PD_CHANNELS + i,
c9786842
YB		 5532 j,
5533 0);
5534
5535 if (instance->ld_ids[ld_index] != 0xff) {
5536 if (sdev1) {
5537 scsi_device_put(sdev1);
5538 }
5539 } else {
5540 if (sdev1) {
5541 scsi_remove_device(sdev1);
5542 scsi_device_put(sdev1);
5543 }
5544 }
5545 }
5546 }
5547 doscan = 0;
5548 break;
5549 case MR_EVT_LD_CREATED:
21c9e160 5550 if (megasas_ld_list_query(instance,
5551 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5552 megasas_get_ld_list(instance);
c9786842
YB		 5553 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5554 for (j = 0;
5555 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5556 j++) {
5557 ld_index =
5558 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5559
5560 sdev1 = scsi_device_lookup(host,
21c9e160 5561 MEGASAS_MAX_PD_CHANNELS + i,
c9786842
YB		 5562 j, 0);
5563
5564 if (instance->ld_ids[ld_index] !=
5565 0xff) {
5566 if (!sdev1) {
5567 scsi_add_device(host,
21c9e160 5568 MEGASAS_MAX_PD_CHANNELS + i,
c9786842
YB		 5569 j, 0);
5570 }
5571 }
5572 if (sdev1) {
5573 scsi_device_put(sdev1);
5574 }
5575 }
5576 }
5577 doscan = 0;
5578 break;
7e8a75f4 5579 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
c9786842 5580 case MR_EVT_FOREIGN_CFG_IMPORTED:
9c915a8c 5581 case MR_EVT_LD_STATE_CHANGE:
7e8a75f4
YB		 5582 doscan = 1;
5583 break;
5584 default:
5585 doscan = 0;
5586 break;
5587 }
5588 } else {
5589 printk(KERN_ERR "invalid evt_detail!\n");
5590 kfree(ev);
5591 return;
5592 }
5593
5594 if (doscan) {
5595 printk(KERN_INFO "scanning ...\n");
5596 megasas_get_pd_list(instance);
5597 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5598 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5599 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5600 sdev1 = scsi_device_lookup(host, i, j, 0);
5601 if (instance->pd_list[pd_index].driveState ==
5602 MR_PD_STATE_SYSTEM) {
5603 if (!sdev1) {
5604 scsi_add_device(host, i, j, 0);
5605 }
5606 if (sdev1)
5607 scsi_device_put(sdev1);
5608 } else {
5609 if (sdev1) {
5610 scsi_remove_device(sdev1);
5611 scsi_device_put(sdev1);
5612 }
5613 }
5614 }
5615 }
c9786842 5616
21c9e160 5617 if (megasas_ld_list_query(instance,
5618 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5619 megasas_get_ld_list(instance);
c9786842
YB		 5620 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5621 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5622 ld_index =
5623 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5624
5625 sdev1 = scsi_device_lookup(host,
21c9e160 5626 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
c9786842
YB		 5627 if (instance->ld_ids[ld_index] != 0xff) {
5628 if (!sdev1) {
5629 scsi_add_device(host,
21c9e160 5630 MEGASAS_MAX_PD_CHANNELS + i,
c9786842
YB		 5631 j, 0);
5632 } else {
5633 scsi_device_put(sdev1);
5634 }
5635 } else {
5636 if (sdev1) {
5637 scsi_remove_device(sdev1);
5638 scsi_device_put(sdev1);
5639 }
5640 }
5641 }
5642 }
7e8a75f4
YB		 5643 }
5644
5645 if ( instance->aen_cmd != NULL ) {
5646 kfree(ev);
5647 return ;
5648 }
5649
94cd65dd 5650 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7e8a75f4
YB		 5651
5652 /* Register AEN with FW for latest sequence number plus 1 */
5653 class_locale.members.reserved = 0;
5654 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5655 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5656 mutex_lock(&instance->aen_mutex);
5657 error = megasas_register_aen(instance, seq_num,
5658 class_locale.word);
5659 mutex_unlock(&instance->aen_mutex);
5660
5661 if (error)
5662 printk(KERN_ERR "register aen failed error %x\n", error);
5663
5664 kfree(ev);
5665}
5666
c4a3e0a5
BS		 5667/**
5668 * megasas_init - Driver load entry point
5669 */
5670static int __init megasas_init(void)
5671{
5672 int rval;
5673
5674 /*
5675 * Announce driver version and other information
5676 */
5677 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5678 MEGASAS_EXT_VERSION);
5679
bd8d6dd4
KD		 5680 spin_lock_init(&poll_aen_lock);
5681
72c4fd36 5682 support_poll_for_event = 2;
837f5fe8 5683 support_device_change = 1;
72c4fd36 5684
c4a3e0a5
BS		 5685 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5686
5687 /*
5688 * Register character device node
5689 */
5690 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5691
5692 if (rval < 0) {
5693 printk(KERN_DEBUG "megasas: failed to open device node\n");
5694 return rval;
5695 }
5696
5697 megasas_mgmt_majorno = rval;
5698
5699 /*
5700 * Register ourselves as PCI hotplug module
5701 */
4041b9cd 5702 rval = pci_register_driver(&megasas_pci_driver);
c4a3e0a5
BS		 5703
5704 if (rval) {
5705 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
83aabc1b
JG		 5706 goto err_pcidrv;
5707 }
5708
5709 rval = driver_create_file(&megasas_pci_driver.driver,
5710 &driver_attr_version);
5711 if (rval)
5712 goto err_dcf_attr_ver;
5713 rval = driver_create_file(&megasas_pci_driver.driver,
5714 &driver_attr_release_date);
5715 if (rval)
5716 goto err_dcf_rel_date;
72c4fd36
YB		 5717
5718 rval = driver_create_file(&megasas_pci_driver.driver,
5719 &driver_attr_support_poll_for_event);
5720 if (rval)
5721 goto err_dcf_support_poll_for_event;
5722
83aabc1b
JG		 5723 rval = driver_create_file(&megasas_pci_driver.driver,
5724 &driver_attr_dbg_lvl);
5725 if (rval)
5726 goto err_dcf_dbg_lvl;
837f5fe8
YB		 5727 rval = driver_create_file(&megasas_pci_driver.driver,
5728 &driver_attr_support_device_change);
5729 if (rval)
5730 goto err_dcf_support_device_change;
5731
c4a3e0a5 5732 return rval;
ad84db2e 5733
837f5fe8 5734err_dcf_support_device_change:
ad84db2e 5735 driver_remove_file(&megasas_pci_driver.driver,
5736 &driver_attr_dbg_lvl);
83aabc1b 5737err_dcf_dbg_lvl:
72c4fd36
YB		 5738 driver_remove_file(&megasas_pci_driver.driver,
5739 &driver_attr_support_poll_for_event);
5740
5741err_dcf_support_poll_for_event:
83aabc1b
JG		 5742 driver_remove_file(&megasas_pci_driver.driver,
5743 &driver_attr_release_date);
72c4fd36 5744
83aabc1b
JG		 5745err_dcf_rel_date:
5746 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5747err_dcf_attr_ver:
5748 pci_unregister_driver(&megasas_pci_driver);
5749err_pcidrv:
5750 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
0d49016b 5751 return rval;
c4a3e0a5
BS		 5752}
5753
5754/**
5755 * megasas_exit - Driver unload entry point
5756 */
5757static void __exit megasas_exit(void)
5758{
658dcedb
SP		 5759 driver_remove_file(&megasas_pci_driver.driver,
5760 &driver_attr_dbg_lvl);
837f5fe8
YB		 5761 driver_remove_file(&megasas_pci_driver.driver,
5762 &driver_attr_support_poll_for_event);
5763 driver_remove_file(&megasas_pci_driver.driver,
5764 &driver_attr_support_device_change);
83aabc1b
JG		 5765 driver_remove_file(&megasas_pci_driver.driver,
5766 &driver_attr_release_date);
5767 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
c4a3e0a5
BS		 5768
5769 pci_unregister_driver(&megasas_pci_driver);
5770 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5771}
5772
5773module_init(megasas_init);
5774module_exit(megasas_exit);
Linux kernel - Deliverables
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